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Finding the Fourth Proportional to 653,404.50, 979,187.40 and 519,691.32

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Solution

The fourth proportional to 653,404.50, 979,187.40 and 519,691.32 is: 778,805.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,404.50 : 979,187.40 = 519,691.32 : x
  2. Step 2: Convert to fraction form
    653,404.50/979,187.40 = 519,691.32/x
  3. Step 3: Cross multiply
    653,404.50x = 979,187.40 × 519,691.32
  4. Step 4: Simplify right side
    653,404.50x = 508,875,192,433.37
  5. Step 5: Solve for x
    x = 508,875,192,433.37/653,404.50
  6. Step 6: Final answer
    x = 778,805.77

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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.