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Finding the Fourth Proportional to 78,934.60, 118,363.52 and 26,326.32

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Solution

The fourth proportional to 78,934.60, 118,363.52 and 26,326.32 is: 39,476.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,934.60 : 118,363.52 = 26,326.32 : x
  2. Step 2: Convert to fraction form
    78,934.60/118,363.52 = 26,326.32/x
  3. Step 3: Cross multiply
    78,934.60x = 118,363.52 × 26,326.32
  4. Step 4: Simplify right side
    78,934.60x = 3,116,075,903.85
  5. Step 5: Solve for x
    x = 3,116,075,903.85/78,934.60
  6. Step 6: Final answer
    x = 39,476.68

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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.