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Finding the Fourth Proportional to 177,386.60, 266,079.90 and 78,890.60

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Solution

The fourth proportional to 177,386.60, 266,079.90 and 78,890.60 is: 118,335.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,386.60 : 266,079.90 = 78,890.60 : x
  2. Step 2: Convert to fraction form
    177,386.60/266,079.90 = 78,890.60/x
  3. Step 3: Cross multiply
    177,386.60x = 266,079.90 × 78,890.60
  4. Step 4: Simplify right side
    177,386.60x = 20,991,202,958.94
  5. Step 5: Solve for x
    x = 20,991,202,958.94/177,386.60
  6. Step 6: Final answer
    x = 118,335.90

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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.