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Finding the Fourth Proportional to 156,915.65, 235,373.48 and 137,232.65

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Solution

The fourth proportional to 156,915.65, 235,373.48 and 137,232.65 is: 205,848.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,915.65 : 235,373.48 = 137,232.65 : x
  2. Step 2: Convert to fraction form
    156,915.65/235,373.48 = 137,232.65/x
  3. Step 3: Cross multiply
    156,915.65x = 235,373.48 × 137,232.65
  4. Step 4: Simplify right side
    156,915.65x = 32,300,926,400.12
  5. Step 5: Solve for x
    x = 32,300,926,400.12/156,915.65
  6. Step 6: Final answer
    x = 205,848.98

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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.