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Finding the Fourth Proportional to 462,712.72, 638,531.52 and 255,988.72

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Solution

The fourth proportional to 462,712.72, 638,531.52 and 255,988.72 is: 353,257.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,712.72 : 638,531.52 = 255,988.72 : x
  2. Step 2: Convert to fraction form
    462,712.72/638,531.52 = 255,988.72/x
  3. Step 3: Cross multiply
    462,712.72x = 638,531.52 × 255,988.72
  4. Step 4: Simplify right side
    462,712.72x = 163,456,866,484.45
  5. Step 5: Solve for x
    x = 163,456,866,484.45/462,712.72
  6. Step 6: Final answer
    x = 353,257.78

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1.5x scale

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.