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Finding the Fourth Proportional to 85,957.70, 118,619.73 and 47,715.01

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Solution

The fourth proportional to 85,957.70, 118,619.73 and 47,715.01 is: 65,845.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,957.70 : 118,619.73 = 47,715.01 : x
  2. Step 2: Convert to fraction form
    85,957.70/118,619.73 = 47,715.01/x
  3. Step 3: Cross multiply
    85,957.70x = 118,619.73 × 47,715.01
  4. Step 4: Simplify right side
    85,957.70x = 5,659,941,306.60
  5. Step 5: Solve for x
    x = 5,659,941,306.60/85,957.70
  6. Step 6: Final answer
    x = 65,845.66

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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.