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Finding the Fourth Proportional to 61,960.32, 92,795.76 and 45,278.64

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Solution

The fourth proportional to 61,960.32, 92,795.76 and 45,278.64 is: 67,812.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,960.32 : 92,795.76 = 45,278.64 : x
  2. Step 2: Convert to fraction form
    61,960.32/92,795.76 = 45,278.64/x
  3. Step 3: Cross multiply
    61,960.32x = 92,795.76 × 45,278.64
  4. Step 4: Simplify right side
    61,960.32x = 4,201,665,810.57
  5. Step 5: Solve for x
    x = 4,201,665,810.57/61,960.32
  6. Step 6: Final answer
    x = 67,812.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.