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Finding the Fourth Proportional to 85,777.62, 118,369.70 and 47,538.81

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Solution

The fourth proportional to 85,777.62, 118,369.70 and 47,538.81 is: 65,601.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,777.62 : 118,369.70 = 47,538.81 : x
  2. Step 2: Convert to fraction form
    85,777.62/118,369.70 = 47,538.81/x
  3. Step 3: Cross multiply
    85,777.62x = 118,369.70 × 47,538.81
  4. Step 4: Simplify right side
    85,777.62x = 5,627,154,440.36
  5. Step 5: Solve for x
    x = 5,627,154,440.36/85,777.62
  6. Step 6: Final answer
    x = 65,601.66

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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.