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Finding the Fourth Proportional to 147,112.40, 220,231.20 and 147,112.40

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Solution

The fourth proportional to 147,112.40, 220,231.20 and 147,112.40 is: 220,231.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,112.40 : 220,231.20 = 147,112.40 : x
  2. Step 2: Convert to fraction form
    147,112.40/220,231.20 = 147,112.40/x
  3. Step 3: Cross multiply
    147,112.40x = 220,231.20 × 147,112.40
  4. Step 4: Simplify right side
    147,112.40x = 32,398,740,386.88
  5. Step 5: Solve for x
    x = 32,398,740,386.88/147,112.40
  6. Step 6: Final answer
    x = 220,231.20

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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.