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Finding the Fourth Proportional to 235,835.80, 353,809.06 and 78,064.25

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Solution

The fourth proportional to 235,835.80, 353,809.06 and 78,064.25 is: 117,114.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,835.80 : 353,809.06 = 78,064.25 : x
  2. Step 2: Convert to fraction form
    235,835.80/353,809.06 = 78,064.25/x
  3. Step 3: Cross multiply
    235,835.80x = 353,809.06 × 78,064.25
  4. Step 4: Simplify right side
    235,835.80x = 27,619,838,521.78
  5. Step 5: Solve for x
    x = 27,619,838,521.78/235,835.80
  6. Step 6: Final answer
    x = 117,114.70

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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.