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Finding the Fourth Proportional to 127,983.84, 176,617.44 and 71,391.84

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Solution

The fourth proportional to 127,983.84, 176,617.44 and 71,391.84 is: 98,520.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,983.84 : 176,617.44 = 71,391.84 : x
  2. Step 2: Convert to fraction form
    127,983.84/176,617.44 = 71,391.84/x
  3. Step 3: Cross multiply
    127,983.84x = 176,617.44 × 71,391.84
  4. Step 4: Simplify right side
    127,983.84x = 12,609,044,017.69
  5. Step 5: Solve for x
    x = 12,609,044,017.69/127,983.84
  6. Step 6: Final answer
    x = 98,520.59

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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.