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Finding the Fourth Proportional to 712,820.88, 983,693.52 and 386,134.62

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Solution

The fourth proportional to 712,820.88, 983,693.52 and 386,134.62 is: 532,866.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,820.88 : 983,693.52 = 386,134.62 : x
  2. Step 2: Convert to fraction form
    712,820.88/983,693.52 = 386,134.62/x
  3. Step 3: Cross multiply
    712,820.88x = 983,693.52 × 386,134.62
  4. Step 4: Simplify right side
    712,820.88x = 379,838,123,541.66
  5. Step 5: Solve for x
    x = 379,838,123,541.66/712,820.88
  6. Step 6: Final answer
    x = 532,866.16

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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.