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Finding the Fourth Proportional to 127,574.64, 176,047.92 and 70,984.80

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Solution

The fourth proportional to 127,574.64, 176,047.92 and 70,984.80 is: 97,956.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,574.64 : 176,047.92 = 70,984.80 : x
  2. Step 2: Convert to fraction form
    127,574.64/176,047.92 = 70,984.80/x
  3. Step 3: Cross multiply
    127,574.64x = 176,047.92 × 70,984.80
  4. Step 4: Simplify right side
    127,574.64x = 12,496,726,391.62
  5. Step 5: Solve for x
    x = 12,496,726,391.62/127,574.64
  6. Step 6: Final answer
    x = 97,956.20

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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.