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Finding the Fourth Proportional to 9,396,987.30, 13,127,438.70 and 9,396,987.30

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Solution

The fourth proportional to 9,396,987.30, 13,127,438.70 and 9,396,987.30 is: 13,127,438.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,396,987.30 : 13,127,438.70 = 9,396,987.30 : x
  2. Step 2: Convert to fraction form
    9,396,987.30/13,127,438.70 = 9,396,987.30/x
  3. Step 3: Cross multiply
    9,396,987.30x = 13,127,438.70 × 9,396,987.30
  4. Step 4: Simplify right side
    9,396,987.30x = 123,358,374,745,428.52
  5. Step 5: Solve for x
    x = 123,358,374,745,428.52/9,396,987.30
  6. Step 6: Final answer
    x = 13,127,438.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.