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Finding the Fourth Proportional to 220,471.10, 330,705.93 and 60,547.18

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Solution

The fourth proportional to 220,471.10, 330,705.93 and 60,547.18 is: 90,820.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,471.10 : 330,705.93 = 60,547.18 : x
  2. Step 2: Convert to fraction form
    220,471.10/330,705.93 = 60,547.18/x
  3. Step 3: Cross multiply
    220,471.10x = 330,705.93 × 60,547.18
  4. Step 4: Simplify right side
    220,471.10x = 20,023,311,470.78
  5. Step 5: Solve for x
    x = 20,023,311,470.78/220,471.10
  6. Step 6: Final answer
    x = 90,820.57

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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.