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Finding the Fourth Proportional to 83,210.40, 124,815.60 and 83,210.40

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Solution

The fourth proportional to 83,210.40, 124,815.60 and 83,210.40 is: 124,815.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,210.40 : 124,815.60 = 83,210.40 : x
  2. Step 2: Convert to fraction form
    83,210.40/124,815.60 = 83,210.40/x
  3. Step 3: Cross multiply
    83,210.40x = 124,815.60 × 83,210.40
  4. Step 4: Simplify right side
    83,210.40x = 10,385,956,002.24
  5. Step 5: Solve for x
    x = 10,385,956,002.24/83,210.40
  6. Step 6: Final answer
    x = 124,815.60

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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.