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Finding the Fourth Proportional to 60,878.12, 83,943.44 and 39,339.50

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Solution

The fourth proportional to 60,878.12, 83,943.44 and 39,339.50 is: 54,244.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,878.12 : 83,943.44 = 39,339.50 : x
  2. Step 2: Convert to fraction form
    60,878.12/83,943.44 = 39,339.50/x
  3. Step 3: Cross multiply
    60,878.12x = 83,943.44 × 39,339.50
  4. Step 4: Simplify right side
    60,878.12x = 3,302,292,957.88
  5. Step 5: Solve for x
    x = 3,302,292,957.88/60,878.12
  6. Step 6: Final answer
    x = 54,244.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.