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Finding the Fourth Proportional to 9,042.48, 12,478.60 and 5,063.60

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Solution

The fourth proportional to 9,042.48, 12,478.60 and 5,063.60 is: 6,987.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,042.48 : 12,478.60 = 5,063.60 : x
  2. Step 2: Convert to fraction form
    9,042.48/12,478.60 = 5,063.60/x
  3. Step 3: Cross multiply
    9,042.48x = 12,478.60 × 5,063.60
  4. Step 4: Simplify right side
    9,042.48x = 63,186,638.96
  5. Step 5: Solve for x
    x = 63,186,638.96/9,042.48
  6. Step 6: Final answer
    x = 6,987.76

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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.