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Finding the Fourth Proportional to 155,363.28, 232,849.32 and 66,511.68

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Solution

The fourth proportional to 155,363.28, 232,849.32 and 66,511.68 is: 99,683.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,363.28 : 232,849.32 = 66,511.68 : x
  2. Step 2: Convert to fraction form
    155,363.28/232,849.32 = 66,511.68/x
  3. Step 3: Cross multiply
    155,363.28x = 232,849.32 × 66,511.68
  4. Step 4: Simplify right side
    155,363.28x = 15,487,199,460.06
  5. Step 5: Solve for x
    x = 15,487,199,460.06/155,363.28
  6. Step 6: Final answer
    x = 99,683.78

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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.