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Finding the Fourth Proportional to 639,714.08, 881,635.92 and 424,474.40

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Solution

The fourth proportional to 639,714.08, 881,635.92 and 424,474.40 is: 584,998.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,714.08 : 881,635.92 = 424,474.40 : x
  2. Step 2: Convert to fraction form
    639,714.08/881,635.92 = 424,474.40/x
  3. Step 3: Cross multiply
    639,714.08x = 881,635.92 × 424,474.40
  4. Step 4: Simplify right side
    639,714.08x = 374,231,878,160.45
  5. Step 5: Solve for x
    x = 374,231,878,160.45/639,714.08
  6. Step 6: Final answer
    x = 584,998.66

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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.