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Finding the Fourth Proportional to 61,787.02, 93,115.78 and 55,870.64

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Solution

The fourth proportional to 61,787.02, 93,115.78 and 55,870.64 is: 84,199.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,787.02 : 93,115.78 = 55,870.64 : x
  2. Step 2: Convert to fraction form
    61,787.02/93,115.78 = 55,870.64/x
  3. Step 3: Cross multiply
    61,787.02x = 93,115.78 × 55,870.64
  4. Step 4: Simplify right side
    61,787.02x = 5,202,438,222.70
  5. Step 5: Solve for x
    x = 5,202,438,222.70/61,787.02
  6. Step 6: Final answer
    x = 84,199.53

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.