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Finding the Fourth Proportional to 710,439.35, 980,064.51 and 516,546.60

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Solution

The fourth proportional to 710,439.35, 980,064.51 and 516,546.60 is: 712,585.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,439.35 : 980,064.51 = 516,546.60 : x
  2. Step 2: Convert to fraction form
    710,439.35/980,064.51 = 516,546.60/x
  3. Step 3: Cross multiply
    710,439.35x = 980,064.51 × 516,546.60
  4. Step 4: Simplify right side
    710,439.35x = 506,248,990,421.17
  5. Step 5: Solve for x
    x = 506,248,990,421.17/710,439.35
  6. Step 6: Final answer
    x = 712,585.80

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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.