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Finding the Fourth Proportional to 147,062.80, 220,812.90 and 113,820.40

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Solution

The fourth proportional to 147,062.80, 220,812.90 and 113,820.40 is: 170,899.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,062.80 : 220,812.90 = 113,820.40 : x
  2. Step 2: Convert to fraction form
    147,062.80/220,812.90 = 113,820.40/x
  3. Step 3: Cross multiply
    147,062.80x = 220,812.90 × 113,820.40
  4. Step 4: Simplify right side
    147,062.80x = 25,133,012,603.16
  5. Step 5: Solve for x
    x = 25,133,012,603.16/147,062.80
  6. Step 6: Final answer
    x = 170,899.86

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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.