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Finding the Fourth Proportional to 147,711.80, 221,567.70 and 100,472.60

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Solution

The fourth proportional to 147,711.80, 221,567.70 and 100,472.60 is: 150,708.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,711.80 : 221,567.70 = 100,472.60 : x
  2. Step 2: Convert to fraction form
    147,711.80/221,567.70 = 100,472.60/x
  3. Step 3: Cross multiply
    147,711.80x = 221,567.70 × 100,472.60
  4. Step 4: Simplify right side
    147,711.80x = 22,261,482,895.02
  5. Step 5: Solve for x
    x = 22,261,482,895.02/147,711.80
  6. Step 6: Final answer
    x = 150,708.90

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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.