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Finding the Fourth Proportional to 157,866.28, 217,818.64 and 97,439.46

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Solution

The fourth proportional to 157,866.28, 217,818.64 and 97,439.46 is: 134,443.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,866.28 : 217,818.64 = 97,439.46 : x
  2. Step 2: Convert to fraction form
    157,866.28/217,818.64 = 97,439.46/x
  3. Step 3: Cross multiply
    157,866.28x = 217,818.64 × 97,439.46
  4. Step 4: Simplify right side
    157,866.28x = 21,224,130,659.53
  5. Step 5: Solve for x
    x = 21,224,130,659.53/157,866.28
  6. Step 6: Final answer
    x = 134,443.72

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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.