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Finding the Fourth Proportional to 7,259,656.63, 10,889,411.13 and 1,868,286.10

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Solution

The fourth proportional to 7,259,656.63, 10,889,411.13 and 1,868,286.10 is: 2,802,410.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,259,656.63 : 10,889,411.13 = 1,868,286.10 : x
  2. Step 2: Convert to fraction form
    7,259,656.63/10,889,411.13 = 1,868,286.10/x
  3. Step 3: Cross multiply
    7,259,656.63x = 10,889,411.13 × 1,868,286.10
  4. Step 4: Simplify right side
    7,259,656.63x = 20,344,535,387,575.80
  5. Step 5: Solve for x
    x = 20,344,535,387,575.80/7,259,656.63
  6. Step 6: Final answer
    x = 2,802,410.15

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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.