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Finding the Fourth Proportional to 7,812,605.71, 11,707,139.87 and 6,961,202.16

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Solution

The fourth proportional to 7,812,605.71, 11,707,139.87 and 6,961,202.16 is: 10,431,317.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812,605.71 : 11,707,139.87 = 6,961,202.16 : x
  2. Step 2: Convert to fraction form
    7,812,605.71/11,707,139.87 = 6,961,202.16/x
  3. Step 3: Cross multiply
    7,812,605.71x = 11,707,139.87 × 6,961,202.16
  4. Step 4: Simplify right side
    7,812,605.71x = 81,495,767,350,466.11
  5. Step 5: Solve for x
    x = 81,495,767,350,466.11/7,812,605.71
  6. Step 6: Final answer
    x = 10,431,317.08

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Double scale
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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.