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Finding the Fourth Proportional to 528,872.60, 728,833.06 and 519,155.04

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Solution

The fourth proportional to 528,872.60, 728,833.06 and 519,155.04 is: 715,441.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,872.60 : 728,833.06 = 519,155.04 : x
  2. Step 2: Convert to fraction form
    528,872.60/728,833.06 = 519,155.04/x
  3. Step 3: Cross multiply
    528,872.60x = 728,833.06 × 519,155.04
  4. Step 4: Simplify right side
    528,872.60x = 378,377,356,417.62
  5. Step 5: Solve for x
    x = 378,377,356,417.62/528,872.60
  6. Step 6: Final answer
    x = 715,441.41

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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.