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Finding the Fourth Proportional to 9,357.18, 12,918.18 and 7,462.68

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Solution

The fourth proportional to 9,357.18, 12,918.18 and 7,462.68 is: 10,302.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,357.18 : 12,918.18 = 7,462.68 : x
  2. Step 2: Convert to fraction form
    9,357.18/12,918.18 = 7,462.68/x
  3. Step 3: Cross multiply
    9,357.18x = 12,918.18 × 7,462.68
  4. Step 4: Simplify right side
    9,357.18x = 96,404,243.52
  5. Step 5: Solve for x
    x = 96,404,243.52/9,357.18
  6. Step 6: Final answer
    x = 10,302.70

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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.