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Finding the Fourth Proportional to 22,646.80, 31,252.87 and 12,575.87

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Solution

The fourth proportional to 22,646.80, 31,252.87 and 12,575.87 is: 17,354.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,646.80 : 31,252.87 = 12,575.87 : x
  2. Step 2: Convert to fraction form
    22,646.80/31,252.87 = 12,575.87/x
  3. Step 3: Cross multiply
    22,646.80x = 31,252.87 × 12,575.87
  4. Step 4: Simplify right side
    22,646.80x = 393,032,030.25
  5. Step 5: Solve for x
    x = 393,032,030.25/22,646.80
  6. Step 6: Final answer
    x = 17,354.86

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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.