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Finding the Fourth Proportional to 515,000.10, 772,281.45 and 248,842.20

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Solution

The fourth proportional to 515,000.10, 772,281.45 and 248,842.20 is: 373,157.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,000.10 : 772,281.45 = 248,842.20 : x
  2. Step 2: Convert to fraction form
    515,000.10/772,281.45 = 248,842.20/x
  3. Step 3: Cross multiply
    515,000.10x = 772,281.45 × 248,842.20
  4. Step 4: Simplify right side
    515,000.10x = 192,176,215,037.19
  5. Step 5: Solve for x
    x = 192,176,215,037.19/515,000.10
  6. Step 6: Final answer
    x = 373,157.63

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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.