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Finding the Fourth Proportional to 60,878.40, 91,324.89 and 25,813.50

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Solution

The fourth proportional to 60,878.40, 91,324.89 and 25,813.50 is: 38,723.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,878.40 : 91,324.89 = 25,813.50 : x
  2. Step 2: Convert to fraction form
    60,878.40/91,324.89 = 25,813.50/x
  3. Step 3: Cross multiply
    60,878.40x = 91,324.89 × 25,813.50
  4. Step 4: Simplify right side
    60,878.40x = 2,357,415,048.02
  5. Step 5: Solve for x
    x = 2,357,415,048.02/60,878.40
  6. Step 6: Final answer
    x = 38,723.34

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1.5x scale

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.