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Finding the Fourth Proportional to 112,569.60, 168,830.10 and 49,389.60

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Solution

The fourth proportional to 112,569.60, 168,830.10 and 49,389.60 is: 74,073.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,569.60 : 168,830.10 = 49,389.60 : x
  2. Step 2: Convert to fraction form
    112,569.60/168,830.10 = 49,389.60/x
  3. Step 3: Cross multiply
    112,569.60x = 168,830.10 × 49,389.60
  4. Step 4: Simplify right side
    112,569.60x = 8,338,451,106.96
  5. Step 5: Solve for x
    x = 8,338,451,106.96/112,569.60
  6. Step 6: Final answer
    x = 74,073.74

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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.