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Finding the Fourth Proportional to 148,803.80, 205,230.45 and 97,868.79

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Solution

The fourth proportional to 148,803.80, 205,230.45 and 97,868.79 is: 134,980.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,803.80 : 205,230.45 = 97,868.79 : x
  2. Step 2: Convert to fraction form
    148,803.80/205,230.45 = 97,868.79/x
  3. Step 3: Cross multiply
    148,803.80x = 205,230.45 × 97,868.79
  4. Step 4: Simplify right side
    148,803.80x = 20,085,655,812.66
  5. Step 5: Solve for x
    x = 20,085,655,812.66/148,803.80
  6. Step 6: Final answer
    x = 134,980.80

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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.