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Finding the Fourth Proportional to 118,808.40, 178,260.60 and 52,261.20

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Solution

The fourth proportional to 118,808.40, 178,260.60 and 52,261.20 is: 78,412.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,808.40 : 178,260.60 = 52,261.20 : x
  2. Step 2: Convert to fraction form
    118,808.40/178,260.60 = 52,261.20/x
  3. Step 3: Cross multiply
    118,808.40x = 178,260.60 × 52,261.20
  4. Step 4: Simplify right side
    118,808.40x = 9,316,112,868.72
  5. Step 5: Solve for x
    x = 9,316,112,868.72/118,808.40
  6. Step 6: Final answer
    x = 78,412.91

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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.