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Finding the Fourth Proportional to 127,521.60, 176,013.60 and 89,812.80

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Solution

The fourth proportional to 127,521.60, 176,013.60 and 89,812.80 is: 123,965.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,521.60 : 176,013.60 = 89,812.80 : x
  2. Step 2: Convert to fraction form
    127,521.60/176,013.60 = 89,812.80/x
  3. Step 3: Cross multiply
    127,521.60x = 176,013.60 × 89,812.80
  4. Step 4: Simplify right side
    127,521.60x = 15,808,274,254.08
  5. Step 5: Solve for x
    x = 15,808,274,254.08/127,521.60
  6. Step 6: Final answer
    x = 123,965.46

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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.