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Finding the Fourth Proportional to 60,662.65, 83,669.89 and 40,207.72

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Solution

The fourth proportional to 60,662.65, 83,669.89 and 40,207.72 is: 55,457.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,662.65 : 83,669.89 = 40,207.72 : x
  2. Step 2: Convert to fraction form
    60,662.65/83,669.89 = 40,207.72/x
  3. Step 3: Cross multiply
    60,662.65x = 83,669.89 × 40,207.72
  4. Step 4: Simplify right side
    60,662.65x = 3,364,175,509.55
  5. Step 5: Solve for x
    x = 3,364,175,509.55/60,662.65
  6. Step 6: Final answer
    x = 55,457.11

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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.