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Finding the Fourth Proportional to 78,788.60, 118,182.64 and 23,384.60

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Solution

The fourth proportional to 78,788.60, 118,182.64 and 23,384.60 is: 35,076.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,788.60 : 118,182.64 = 23,384.60 : x
  2. Step 2: Convert to fraction form
    78,788.60/118,182.64 = 23,384.60/x
  3. Step 3: Cross multiply
    78,788.60x = 118,182.64 × 23,384.60
  4. Step 4: Simplify right side
    78,788.60x = 2,763,653,763.34
  5. Step 5: Solve for x
    x = 2,763,653,763.34/78,788.60
  6. Step 6: Final answer
    x = 35,076.82

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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.