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Finding the Fourth Proportional to 76,737.60, 105,885.60 and 43,197.12

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Solution

The fourth proportional to 76,737.60, 105,885.60 and 43,197.12 is: 59,605.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,737.60 : 105,885.60 = 43,197.12 : x
  2. Step 2: Convert to fraction form
    76,737.60/105,885.60 = 43,197.12/x
  3. Step 3: Cross multiply
    76,737.60x = 105,885.60 × 43,197.12
  4. Step 4: Simplify right side
    76,737.60x = 4,573,952,969.47
  5. Step 5: Solve for x
    x = 4,573,952,969.47/76,737.60
  6. Step 6: Final answer
    x = 59,605.11

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1.5x scale

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.