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Finding the Fourth Proportional to 90,445.76, 135,592.04 and 34,254.88

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Solution

The fourth proportional to 90,445.76, 135,592.04 and 34,254.88 is: 51,353.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,445.76 : 135,592.04 = 34,254.88 : x
  2. Step 2: Convert to fraction form
    90,445.76/135,592.04 = 34,254.88/x
  3. Step 3: Cross multiply
    90,445.76x = 135,592.04 × 34,254.88
  4. Step 4: Simplify right side
    90,445.76x = 4,644,689,059.16
  5. Step 5: Solve for x
    x = 4,644,689,059.16/90,445.76
  6. Step 6: Final answer
    x = 51,353.31

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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.