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Finding the Fourth Proportional to 158,641.92, 218,928.76 and 87,025.60

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Solution

The fourth proportional to 158,641.92, 218,928.76 and 87,025.60 is: 120,096.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,641.92 : 218,928.76 = 87,025.60 : x
  2. Step 2: Convert to fraction form
    158,641.92/218,928.76 = 87,025.60/x
  3. Step 3: Cross multiply
    158,641.92x = 218,928.76 × 87,025.60
  4. Step 4: Simplify right side
    158,641.92x = 19,052,406,696.26
  5. Step 5: Solve for x
    x = 19,052,406,696.26/158,641.92
  6. Step 6: Final answer
    x = 120,096.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.