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Finding the Fourth Proportional to 64,510.92, 89,020.16 and 36,211.14

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Solution

The fourth proportional to 64,510.92, 89,020.16 and 36,211.14 is: 49,968.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,510.92 : 89,020.16 = 36,211.14 : x
  2. Step 2: Convert to fraction form
    64,510.92/89,020.16 = 36,211.14/x
  3. Step 3: Cross multiply
    64,510.92x = 89,020.16 × 36,211.14
  4. Step 4: Simplify right side
    64,510.92x = 3,223,521,476.58
  5. Step 5: Solve for x
    x = 3,223,521,476.58/64,510.92
  6. Step 6: Final answer
    x = 49,968.62

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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.