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Finding the Fourth Proportional to 528,753.78, 793,126.89 and 129,400.29

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Solution

The fourth proportional to 528,753.78, 793,126.89 and 129,400.29 is: 194,099.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,753.78 : 793,126.89 = 129,400.29 : x
  2. Step 2: Convert to fraction form
    528,753.78/793,126.89 = 129,400.29/x
  3. Step 3: Cross multiply
    528,753.78x = 793,126.89 × 129,400.29
  4. Step 4: Simplify right side
    528,753.78x = 102,630,849,572.80
  5. Step 5: Solve for x
    x = 102,630,849,572.80/528,753.78
  6. Step 6: Final answer
    x = 194,099.51

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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.