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Finding the Fourth Proportional to 89,695.17, 134,573.76 and 39,810.20

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Solution

The fourth proportional to 89,695.17, 134,573.76 and 39,810.20 is: 59,729.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,695.17 : 134,573.76 = 39,810.20 : x
  2. Step 2: Convert to fraction form
    89,695.17/134,573.76 = 39,810.20/x
  3. Step 3: Cross multiply
    89,695.17x = 134,573.76 × 39,810.20
  4. Step 4: Simplify right side
    89,695.17x = 5,357,407,627.48
  5. Step 5: Solve for x
    x = 5,357,407,627.48/89,695.17
  6. Step 6: Final answer
    x = 59,729.05

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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.