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Finding the Fourth Proportional to 128,326.57, 192,511.72 and 39,563.53

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Solution

The fourth proportional to 128,326.57, 192,511.72 and 39,563.53 is: 59,352.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,326.57 : 192,511.72 = 39,563.53 : x
  2. Step 2: Convert to fraction form
    128,326.57/192,511.72 = 39,563.53/x
  3. Step 3: Cross multiply
    128,326.57x = 192,511.72 × 39,563.53
  4. Step 4: Simplify right side
    128,326.57x = 7,616,443,209.57
  5. Step 5: Solve for x
    x = 7,616,443,209.57/128,326.57
  6. Step 6: Final answer
    x = 59,352.04

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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.