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Finding the Fourth Proportional to 67,722.62, 93,457.90 and 40,859.93

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Solution

The fourth proportional to 67,722.62, 93,457.90 and 40,859.93 is: 56,387.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,722.62 : 93,457.90 = 40,859.93 : x
  2. Step 2: Convert to fraction form
    67,722.62/93,457.90 = 40,859.93/x
  3. Step 3: Cross multiply
    67,722.62x = 93,457.90 × 40,859.93
  4. Step 4: Simplify right side
    67,722.62x = 3,818,683,047.65
  5. Step 5: Solve for x
    x = 3,818,683,047.65/67,722.62
  6. Step 6: Final answer
    x = 56,387.12

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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.