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Finding the Fourth Proportional to 692,680.64, 955,889.92 and 386,761.76

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Solution

The fourth proportional to 692,680.64, 955,889.92 and 386,761.76 is: 533,726.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,680.64 : 955,889.92 = 386,761.76 : x
  2. Step 2: Convert to fraction form
    692,680.64/955,889.92 = 386,761.76/x
  3. Step 3: Cross multiply
    692,680.64x = 955,889.92 × 386,761.76
  4. Step 4: Simplify right side
    692,680.64x = 369,701,667,825.46
  5. Step 5: Solve for x
    x = 369,701,667,825.46/692,680.64
  6. Step 6: Final answer
    x = 533,726.00

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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.