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Finding the Fourth Proportional to 9,437.78, 13,023.78 and 5,246.30

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Solution

The fourth proportional to 9,437.78, 13,023.78 and 5,246.30 is: 7,239.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,437.78 : 13,023.78 = 5,246.30 : x
  2. Step 2: Convert to fraction form
    9,437.78/13,023.78 = 5,246.30/x
  3. Step 3: Cross multiply
    9,437.78x = 13,023.78 × 5,246.30
  4. Step 4: Simplify right side
    9,437.78x = 68,326,657.01
  5. Step 5: Solve for x
    x = 68,326,657.01/9,437.78
  6. Step 6: Final answer
    x = 7,239.70

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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.