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Finding the Fourth Proportional to 528,324.56, 728,896.56 and 347,134.04

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Solution

The fourth proportional to 528,324.56, 728,896.56 and 347,134.04 is: 478,919.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,324.56 : 728,896.56 = 347,134.04 : x
  2. Step 2: Convert to fraction form
    528,324.56/728,896.56 = 347,134.04/x
  3. Step 3: Cross multiply
    528,324.56x = 728,896.56 × 347,134.04
  4. Step 4: Simplify right side
    528,324.56x = 253,024,807,614.90
  5. Step 5: Solve for x
    x = 253,024,807,614.90/528,324.56
  6. Step 6: Final answer
    x = 478,919.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.