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Finding the Fourth Proportional to 112,915.74, 155,823.72 and 62,614.74

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Solution

The fourth proportional to 112,915.74, 155,823.72 and 62,614.74 is: 86,408.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,915.74 : 155,823.72 = 62,614.74 : x
  2. Step 2: Convert to fraction form
    112,915.74/155,823.72 = 62,614.74/x
  3. Step 3: Cross multiply
    112,915.74x = 155,823.72 × 62,614.74
  4. Step 4: Simplify right side
    112,915.74x = 9,756,861,713.63
  5. Step 5: Solve for x
    x = 9,756,861,713.63/112,915.74
  6. Step 6: Final answer
    x = 86,408.34

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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.