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Finding the Fourth Proportional to 676,670.71, 933,686.90 and 386,149.63

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Solution

The fourth proportional to 676,670.71, 933,686.90 and 386,149.63 is: 532,818.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,670.71 : 933,686.90 = 386,149.63 : x
  2. Step 2: Convert to fraction form
    676,670.71/933,686.90 = 386,149.63/x
  3. Step 3: Cross multiply
    676,670.71x = 933,686.90 × 386,149.63
  4. Step 4: Simplify right side
    676,670.71x = 360,542,850,970.85
  5. Step 5: Solve for x
    x = 360,542,850,970.85/676,670.71
  6. Step 6: Final answer
    x = 532,818.76

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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.