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Finding the Fourth Proportional to 32,542.50, 48,813.75 and 7,918.50

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Solution

The fourth proportional to 32,542.50, 48,813.75 and 7,918.50 is: 11,877.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,542.50 : 48,813.75 = 7,918.50 : x
  2. Step 2: Convert to fraction form
    32,542.50/48,813.75 = 7,918.50/x
  3. Step 3: Cross multiply
    32,542.50x = 48,813.75 × 7,918.50
  4. Step 4: Simplify right side
    32,542.50x = 386,531,679.38
  5. Step 5: Solve for x
    x = 386,531,679.38/32,542.50
  6. Step 6: Final answer
    x = 11,877.75

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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.