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Finding the Fourth Proportional to 70,586.92, 97,411.98 and 39,957.65

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Solution

The fourth proportional to 70,586.92, 97,411.98 and 39,957.65 is: 55,142.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,586.92 : 97,411.98 = 39,957.65 : x
  2. Step 2: Convert to fraction form
    70,586.92/97,411.98 = 39,957.65/x
  3. Step 3: Cross multiply
    70,586.92x = 97,411.98 × 39,957.65
  4. Step 4: Simplify right side
    70,586.92x = 3,892,353,802.65
  5. Step 5: Solve for x
    x = 3,892,353,802.65/70,586.92
  6. Step 6: Final answer
    x = 55,142.71

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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.