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Finding the Fourth Proportional to 193,077.60, 289,486.80 and 87,842.40

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Solution

The fourth proportional to 193,077.60, 289,486.80 and 87,842.40 is: 131,704.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,077.60 : 289,486.80 = 87,842.40 : x
  2. Step 2: Convert to fraction form
    193,077.60/289,486.80 = 87,842.40/x
  3. Step 3: Cross multiply
    193,077.60x = 289,486.80 × 87,842.40
  4. Step 4: Simplify right side
    193,077.60x = 25,429,215,280.32
  5. Step 5: Solve for x
    x = 25,429,215,280.32/193,077.60
  6. Step 6: Final answer
    x = 131,704.64

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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.