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Finding the Fourth Proportional to 102,862.80, 154,553.40 and 65,440.80

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Solution

The fourth proportional to 102,862.80, 154,553.40 and 65,440.80 is: 98,326.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,862.80 : 154,553.40 = 65,440.80 : x
  2. Step 2: Convert to fraction form
    102,862.80/154,553.40 = 65,440.80/x
  3. Step 3: Cross multiply
    102,862.80x = 154,553.40 × 65,440.80
  4. Step 4: Simplify right side
    102,862.80x = 10,114,098,138.72
  5. Step 5: Solve for x
    x = 10,114,098,138.72/102,862.80
  6. Step 6: Final answer
    x = 98,326.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.