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Finding the Fourth Proportional to 85,683.52, 128,512.08 and 23,358.88

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Solution

The fourth proportional to 85,683.52, 128,512.08 and 23,358.88 is: 35,034.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,683.52 : 128,512.08 = 23,358.88 : x
  2. Step 2: Convert to fraction form
    85,683.52/128,512.08 = 23,358.88/x
  3. Step 3: Cross multiply
    85,683.52x = 128,512.08 × 23,358.88
  4. Step 4: Simplify right side
    85,683.52x = 3,001,898,255.27
  5. Step 5: Solve for x
    x = 3,001,898,255.27/85,683.52
  6. Step 6: Final answer
    x = 35,034.72

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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.