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Finding the Fourth Proportional to 636,414.95, 954,886.79 and 257,603.47

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Solution

The fourth proportional to 636,414.95, 954,886.79 and 257,603.47 is: 386,512.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,414.95 : 954,886.79 = 257,603.47 : x
  2. Step 2: Convert to fraction form
    636,414.95/954,886.79 = 257,603.47/x
  3. Step 3: Cross multiply
    636,414.95x = 954,886.79 × 257,603.47
  4. Step 4: Simplify right side
    636,414.95x = 245,982,144,498.71
  5. Step 5: Solve for x
    x = 245,982,144,498.71/636,414.95
  6. Step 6: Final answer
    x = 386,512.20

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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.