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Finding the Fourth Proportional to 546,725.68, 819,423.65 and 386,847.69

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Solution

The fourth proportional to 546,725.68, 819,423.65 and 386,847.69 is: 579,801.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,725.68 : 819,423.65 = 386,847.69 : x
  2. Step 2: Convert to fraction form
    546,725.68/819,423.65 = 386,847.69/x
  3. Step 3: Cross multiply
    546,725.68x = 819,423.65 × 386,847.69
  4. Step 4: Simplify right side
    546,725.68x = 316,992,142,577.47
  5. Step 5: Solve for x
    x = 316,992,142,577.47/546,725.68
  6. Step 6: Final answer
    x = 579,801.09

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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.