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Finding the Fourth Proportional to 127,866.84, 176,373.90 and 84,845.40

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Solution

The fourth proportional to 127,866.84, 176,373.90 and 84,845.40 is: 117,032.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,866.84 : 176,373.90 = 84,845.40 : x
  2. Step 2: Convert to fraction form
    127,866.84/176,373.90 = 84,845.40/x
  3. Step 3: Cross multiply
    127,866.84x = 176,373.90 × 84,845.40
  4. Step 4: Simplify right side
    127,866.84x = 14,964,514,095.06
  5. Step 5: Solve for x
    x = 14,964,514,095.06/127,866.84
  6. Step 6: Final answer
    x = 117,032.02

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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.