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Finding the Fourth Proportional to 576,712.60, 865,068.90 and 483,400.60

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Solution

The fourth proportional to 576,712.60, 865,068.90 and 483,400.60 is: 725,100.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,712.60 : 865,068.90 = 483,400.60 : x
  2. Step 2: Convert to fraction form
    576,712.60/865,068.90 = 483,400.60/x
  3. Step 3: Cross multiply
    576,712.60x = 865,068.90 × 483,400.60
  4. Step 4: Simplify right side
    576,712.60x = 418,174,825,301.34
  5. Step 5: Solve for x
    x = 418,174,825,301.34/576,712.60
  6. Step 6: Final answer
    x = 725,100.90

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Similar ratio
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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.