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Finding the Fourth Proportional to 70,655.16, 97,479.99 and 43,787.85

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Solution

The fourth proportional to 70,655.16, 97,479.99 and 43,787.85 is: 60,412.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,655.16 : 97,479.99 = 43,787.85 : x
  2. Step 2: Convert to fraction form
    70,655.16/97,479.99 = 43,787.85/x
  3. Step 3: Cross multiply
    70,655.16x = 97,479.99 × 43,787.85
  4. Step 4: Simplify right side
    70,655.16x = 4,268,439,180.12
  5. Step 5: Solve for x
    x = 4,268,439,180.12/70,655.16
  6. Step 6: Final answer
    x = 60,412.28

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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.