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Finding the Fourth Proportional to 127,646.61, 176,175.93 and 73,931.61

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Solution

The fourth proportional to 127,646.61, 176,175.93 and 73,931.61 is: 102,039.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,646.61 : 176,175.93 = 73,931.61 : x
  2. Step 2: Convert to fraction form
    127,646.61/176,175.93 = 73,931.61/x
  3. Step 3: Cross multiply
    127,646.61x = 176,175.93 × 73,931.61
  4. Step 4: Simplify right side
    127,646.61x = 13,024,969,267.27
  5. Step 5: Solve for x
    x = 13,024,969,267.27/127,646.61
  6. Step 6: Final answer
    x = 102,039.29

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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.