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Finding the Fourth Proportional to 98,737.89, 148,125.31 and 39,578.22

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Solution

The fourth proportional to 98,737.89, 148,125.31 and 39,578.22 is: 59,374.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,737.89 : 148,125.31 = 39,578.22 : x
  2. Step 2: Convert to fraction form
    98,737.89/148,125.31 = 39,578.22/x
  3. Step 3: Cross multiply
    98,737.89x = 148,125.31 × 39,578.22
  4. Step 4: Simplify right side
    98,737.89x = 5,862,536,007.80
  5. Step 5: Solve for x
    x = 5,862,536,007.80/98,737.89
  6. Step 6: Final answer
    x = 59,374.74

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1.5x scale

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.