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Finding the Fourth Proportional to 84,836.40, 127,254.60 and 49,358.40

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Solution

The fourth proportional to 84,836.40, 127,254.60 and 49,358.40 is: 74,037.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,836.40 : 127,254.60 = 49,358.40 : x
  2. Step 2: Convert to fraction form
    84,836.40/127,254.60 = 49,358.40/x
  3. Step 3: Cross multiply
    84,836.40x = 127,254.60 × 49,358.40
  4. Step 4: Simplify right side
    84,836.40x = 6,281,083,448.64
  5. Step 5: Solve for x
    x = 6,281,083,448.64/84,836.40
  6. Step 6: Final answer
    x = 74,037.60

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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.