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Finding the Fourth Proportional to 155,732.90, 218,616.55 and 155,732.90

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Solution

The fourth proportional to 155,732.90, 218,616.55 and 155,732.90 is: 218,616.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,732.90 : 218,616.55 = 155,732.90 : x
  2. Step 2: Convert to fraction form
    155,732.90/218,616.55 = 155,732.90/x
  3. Step 3: Cross multiply
    155,732.90x = 218,616.55 × 155,732.90
  4. Step 4: Simplify right side
    155,732.90x = 34,045,789,319.50
  5. Step 5: Solve for x
    x = 34,045,789,319.50/155,732.90
  6. Step 6: Final answer
    x = 218,616.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.