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Finding the Fourth Proportional to 147,117.10, 220,906.05 and 84,909.10

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Solution

The fourth proportional to 147,117.10, 220,906.05 and 84,909.10 is: 127,496.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,117.10 : 220,906.05 = 84,909.10 : x
  2. Step 2: Convert to fraction form
    147,117.10/220,906.05 = 84,909.10/x
  3. Step 3: Cross multiply
    147,117.10x = 220,906.05 × 84,909.10
  4. Step 4: Simplify right side
    147,117.10x = 18,756,933,890.06
  5. Step 5: Solve for x
    x = 18,756,933,890.06/147,117.10
  6. Step 6: Final answer
    x = 127,496.63

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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.