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Finding the Fourth Proportional to 116,559.78, 174,586.95 and 72,197.70

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Solution

The fourth proportional to 116,559.78, 174,586.95 and 72,197.70 is: 108,140.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,559.78 : 174,586.95 = 72,197.70 : x
  2. Step 2: Convert to fraction form
    116,559.78/174,586.95 = 72,197.70/x
  3. Step 3: Cross multiply
    116,559.78x = 174,586.95 × 72,197.70
  4. Step 4: Simplify right side
    116,559.78x = 12,604,776,240.02
  5. Step 5: Solve for x
    x = 12,604,776,240.02/116,559.78
  6. Step 6: Final answer
    x = 108,140.01

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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.