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Finding the Fourth Proportional to 473,078.46, 709,726.36 and 136,121.91

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Solution

The fourth proportional to 473,078.46, 709,726.36 and 136,121.91 is: 204,214.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,078.46 : 709,726.36 = 136,121.91 : x
  2. Step 2: Convert to fraction form
    473,078.46/709,726.36 = 136,121.91/x
  3. Step 3: Cross multiply
    473,078.46x = 709,726.36 × 136,121.91
  4. Step 4: Simplify right side
    473,078.46x = 96,609,307,700.55
  5. Step 5: Solve for x
    x = 96,609,307,700.55/473,078.46
  6. Step 6: Final answer
    x = 204,214.13

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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.