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Finding the Fourth Proportional to 28,959.92, 43,440.88 and 9,984.32

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Solution

The fourth proportional to 28,959.92, 43,440.88 and 9,984.32 is: 14,976.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,959.92 : 43,440.88 = 9,984.32 : x
  2. Step 2: Convert to fraction form
    28,959.92/43,440.88 = 9,984.32/x
  3. Step 3: Cross multiply
    28,959.92x = 43,440.88 × 9,984.32
  4. Step 4: Simplify right side
    28,959.92x = 433,727,647.00
  5. Step 5: Solve for x
    x = 433,727,647.00/28,959.92
  6. Step 6: Final answer
    x = 14,976.82

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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.