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Finding the Fourth Proportional to 8,398,891.68, 12,613,513.32 and 7,723,727.52

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Solution

The fourth proportional to 8,398,891.68, 12,613,513.32 and 7,723,727.52 is: 11,599,547.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,398,891.68 : 12,613,513.32 = 7,723,727.52 : x
  2. Step 2: Convert to fraction form
    8,398,891.68/12,613,513.32 = 7,723,727.52/x
  3. Step 3: Cross multiply
    8,398,891.68x = 12,613,513.32 × 7,723,727.52
  4. Step 4: Simplify right side
    8,398,891.68x = 97,423,339,953,570.56
  5. Step 5: Solve for x
    x = 97,423,339,953,570.56/8,398,891.68
  6. Step 6: Final answer
    x = 11,599,547.14

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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.