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Finding the Fourth Proportional to 124,756.64, 172,164.04 and 67,395.96

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Solution

The fourth proportional to 124,756.64, 172,164.04 and 67,395.96 is: 93,006.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,756.64 : 172,164.04 = 67,395.96 : x
  2. Step 2: Convert to fraction form
    124,756.64/172,164.04 = 67,395.96/x
  3. Step 3: Cross multiply
    124,756.64x = 172,164.04 × 67,395.96
  4. Step 4: Simplify right side
    124,756.64x = 11,603,160,753.28
  5. Step 5: Solve for x
    x = 11,603,160,753.28/124,756.64
  6. Step 6: Final answer
    x = 93,006.36

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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.