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Finding the Fourth Proportional to 148,811.40, 207,869.40 and 148,811.40

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Solution

The fourth proportional to 148,811.40, 207,869.40 and 148,811.40 is: 207,869.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,811.40 : 207,869.40 = 148,811.40 : x
  2. Step 2: Convert to fraction form
    148,811.40/207,869.40 = 148,811.40/x
  3. Step 3: Cross multiply
    148,811.40x = 207,869.40 × 148,811.40
  4. Step 4: Simplify right side
    148,811.40x = 30,933,336,431.16
  5. Step 5: Solve for x
    x = 30,933,336,431.16/148,811.40
  6. Step 6: Final answer
    x = 207,869.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.