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Finding the Fourth Proportional to 238,146.87, 328,915.44 and 156,838.59

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Solution

The fourth proportional to 238,146.87, 328,915.44 and 156,838.59 is: 216,616.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,146.87 : 328,915.44 = 156,838.59 : x
  2. Step 2: Convert to fraction form
    238,146.87/328,915.44 = 156,838.59/x
  3. Step 3: Cross multiply
    238,146.87x = 328,915.44 × 156,838.59
  4. Step 4: Simplify right side
    238,146.87x = 51,586,633,054.64
  5. Step 5: Solve for x
    x = 51,586,633,054.64/238,146.87
  6. Step 6: Final answer
    x = 216,616.88

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1.5x scale

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.