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Finding the Fourth Proportional to 160,071.68, 239,915.76 and 74,567.28

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Solution

The fourth proportional to 160,071.68, 239,915.76 and 74,567.28 is: 111,761.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,071.68 : 239,915.76 = 74,567.28 : x
  2. Step 2: Convert to fraction form
    160,071.68/239,915.76 = 74,567.28/x
  3. Step 3: Cross multiply
    160,071.68x = 239,915.76 × 74,567.28
  4. Step 4: Simplify right side
    160,071.68x = 17,889,865,652.33
  5. Step 5: Solve for x
    x = 17,889,865,652.33/160,071.68
  6. Step 6: Final answer
    x = 111,761.59

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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.