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Finding the Fourth Proportional to 91,868.70, 137,855.67 and 35,701.53

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Solution

The fourth proportional to 91,868.70, 137,855.67 and 35,701.53 is: 53,572.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,868.70 : 137,855.67 = 35,701.53 : x
  2. Step 2: Convert to fraction form
    91,868.70/137,855.67 = 35,701.53/x
  3. Step 3: Cross multiply
    91,868.70x = 137,855.67 × 35,701.53
  4. Step 4: Simplify right side
    91,868.70x = 4,921,657,888.16
  5. Step 5: Solve for x
    x = 4,921,657,888.16/91,868.70
  6. Step 6: Final answer
    x = 53,572.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.