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Finding the Fourth Proportional to 525,867.40, 788,801.10 and 193,400.20

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Solution

The fourth proportional to 525,867.40, 788,801.10 and 193,400.20 is: 290,100.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,867.40 : 788,801.10 = 193,400.20 : x
  2. Step 2: Convert to fraction form
    525,867.40/788,801.10 = 193,400.20/x
  3. Step 3: Cross multiply
    525,867.40x = 788,801.10 × 193,400.20
  4. Step 4: Simplify right side
    525,867.40x = 152,554,290,500.22
  5. Step 5: Solve for x
    x = 152,554,290,500.22/525,867.40
  6. Step 6: Final answer
    x = 290,100.30

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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.