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Finding the Fourth Proportional to 177,686.60, 266,432.70 and 72,386.60

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Solution

The fourth proportional to 177,686.60, 266,432.70 and 72,386.60 is: 108,540.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,686.60 : 266,432.70 = 72,386.60 : x
  2. Step 2: Convert to fraction form
    177,686.60/266,432.70 = 72,386.60/x
  3. Step 3: Cross multiply
    177,686.60x = 266,432.70 × 72,386.60
  4. Step 4: Simplify right side
    177,686.60x = 19,286,157,281.82
  5. Step 5: Solve for x
    x = 19,286,157,281.82/177,686.60
  6. Step 6: Final answer
    x = 108,540.30

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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.