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Finding the Fourth Proportional to 85,225.60, 127,838.40 and 43,753.60

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Solution

The fourth proportional to 85,225.60, 127,838.40 and 43,753.60 is: 65,630.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,225.60 : 127,838.40 = 43,753.60 : x
  2. Step 2: Convert to fraction form
    85,225.60/127,838.40 = 43,753.60/x
  3. Step 3: Cross multiply
    85,225.60x = 127,838.40 × 43,753.60
  4. Step 4: Simplify right side
    85,225.60x = 5,593,390,218.24
  5. Step 5: Solve for x
    x = 5,593,390,218.24/85,225.60
  6. Step 6: Final answer
    x = 65,630.40

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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.