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Finding the Fourth Proportional to 70,137.62, 96,787.20 and 39,510.10

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Solution

The fourth proportional to 70,137.62, 96,787.20 and 39,510.10 is: 54,522.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,137.62 : 96,787.20 = 39,510.10 : x
  2. Step 2: Convert to fraction form
    70,137.62/96,787.20 = 39,510.10/x
  3. Step 3: Cross multiply
    70,137.62x = 96,787.20 × 39,510.10
  4. Step 4: Simplify right side
    70,137.62x = 3,824,071,950.72
  5. Step 5: Solve for x
    x = 3,824,071,950.72/70,137.62
  6. Step 6: Final answer
    x = 54,522.41

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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.