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Finding the Fourth Proportional to 148,859.20, 223,288.80 and 89,810.20

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Solution

The fourth proportional to 148,859.20, 223,288.80 and 89,810.20 is: 134,715.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,859.20 : 223,288.80 = 89,810.20 : x
  2. Step 2: Convert to fraction form
    148,859.20/223,288.80 = 89,810.20/x
  3. Step 3: Cross multiply
    148,859.20x = 223,288.80 × 89,810.20
  4. Step 4: Simplify right side
    148,859.20x = 20,053,611,785.76
  5. Step 5: Solve for x
    x = 20,053,611,785.76/148,859.20
  6. Step 6: Final answer
    x = 134,715.30

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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.