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Finding the Fourth Proportional to 368,834.40, 553,316.40 and 132,314.40

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Solution

The fourth proportional to 368,834.40, 553,316.40 and 132,314.40 is: 198,494.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,834.40 : 553,316.40 = 132,314.40 : x
  2. Step 2: Convert to fraction form
    368,834.40/553,316.40 = 132,314.40/x
  3. Step 3: Cross multiply
    368,834.40x = 553,316.40 × 132,314.40
  4. Step 4: Simplify right side
    368,834.40x = 73,211,727,476.16
  5. Step 5: Solve for x
    x = 73,211,727,476.16/368,834.40
  6. Step 6: Final answer
    x = 198,494.85

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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.