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Finding the Fourth Proportional to 90,905.34, 125,472.60 and 52,657.14

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Solution

The fourth proportional to 90,905.34, 125,472.60 and 52,657.14 is: 72,680.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,905.34 : 125,472.60 = 52,657.14 : x
  2. Step 2: Convert to fraction form
    90,905.34/125,472.60 = 52,657.14/x
  3. Step 3: Cross multiply
    90,905.34x = 125,472.60 × 52,657.14
  4. Step 4: Simplify right side
    90,905.34x = 6,607,028,264.36
  5. Step 5: Solve for x
    x = 6,607,028,264.36/90,905.34
  6. Step 6: Final answer
    x = 72,680.31

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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.