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Finding the Fourth Proportional to 169,931.70, 254,889.45 and 57,600.90

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Solution

The fourth proportional to 169,931.70, 254,889.45 and 57,600.90 is: 86,398.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,931.70 : 254,889.45 = 57,600.90 : x
  2. Step 2: Convert to fraction form
    169,931.70/254,889.45 = 57,600.90/x
  3. Step 3: Cross multiply
    169,931.70x = 254,889.45 × 57,600.90
  4. Step 4: Simplify right side
    169,931.70x = 14,681,861,720.51
  5. Step 5: Solve for x
    x = 14,681,861,720.51/169,931.70
  6. Step 6: Final answer
    x = 86,398.60

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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.