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Finding the Fourth Proportional to 127,716.52, 176,248.72 and 74,032.64

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Solution

The fourth proportional to 127,716.52, 176,248.72 and 74,032.64 is: 102,165.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,716.52 : 176,248.72 = 74,032.64 : x
  2. Step 2: Convert to fraction form
    127,716.52/176,248.72 = 74,032.64/x
  3. Step 3: Cross multiply
    127,716.52x = 176,248.72 × 74,032.64
  4. Step 4: Simplify right side
    127,716.52x = 13,048,158,038.22
  5. Step 5: Solve for x
    x = 13,048,158,038.22/127,716.52
  6. Step 6: Final answer
    x = 102,165.00

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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.