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Finding the Fourth Proportional to 76,557.60, 105,747.60 and 58,869.60

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Solution

The fourth proportional to 76,557.60, 105,747.60 and 58,869.60 is: 81,315.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,557.60 : 105,747.60 = 58,869.60 : x
  2. Step 2: Convert to fraction form
    76,557.60/105,747.60 = 58,869.60/x
  3. Step 3: Cross multiply
    76,557.60x = 105,747.60 × 58,869.60
  4. Step 4: Simplify right side
    76,557.60x = 6,225,318,912.96
  5. Step 5: Solve for x
    x = 6,225,318,912.96/76,557.60
  6. Step 6: Final answer
    x = 81,315.49

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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.