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Finding the Fourth Proportional to 61,207.70, 91,811.55 and 34,963.70

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Solution

The fourth proportional to 61,207.70, 91,811.55 and 34,963.70 is: 52,445.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,207.70 : 91,811.55 = 34,963.70 : x
  2. Step 2: Convert to fraction form
    61,207.70/91,811.55 = 34,963.70/x
  3. Step 3: Cross multiply
    61,207.70x = 91,811.55 × 34,963.70
  4. Step 4: Simplify right side
    61,207.70x = 3,210,071,490.74
  5. Step 5: Solve for x
    x = 3,210,071,490.74/61,207.70
  6. Step 6: Final answer
    x = 52,445.55

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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.