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Finding the Fourth Proportional to 525,312,000.20, 787,968,000.30 and 525,312,000.20

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Solution

The fourth proportional to 525,312,000.20, 787,968,000.30 and 525,312,000.20 is: 787,968,000.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,312,000.20 : 787,968,000.30 = 525,312,000.20 : x
  2. Step 2: Convert to fraction form
    525,312,000.20/787,968,000.30 = 525,312,000.20/x
  3. Step 3: Cross multiply
    525,312,000.20x = 787,968,000.30 × 525,312,000.20
  4. Step 4: Simplify right side
    525,312,000.20x = 413,929,046,331,187,136
  5. Step 5: Solve for x
    x = 413,929,046,331,187,136/525,312,000.20
  6. Step 6: Final answer
    x = 787,968,000.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.