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Finding the Fourth Proportional to 10,531,903.80, 15,797,855.70 and 7,340,633.40

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Solution

The fourth proportional to 10,531,903.80, 15,797,855.70 and 7,340,633.40 is: 11,010,950.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,531,903.80 : 15,797,855.70 = 7,340,633.40 : x
  2. Step 2: Convert to fraction form
    10,531,903.80/15,797,855.70 = 7,340,633.40/x
  3. Step 3: Cross multiply
    10,531,903.80x = 15,797,855.70 × 7,340,633.40
  4. Step 4: Simplify right side
    10,531,903.80x = 115,966,267,199,800.38
  5. Step 5: Solve for x
    x = 115,966,267,199,800.38/10,531,903.80
  6. Step 6: Final answer
    x = 11,010,950.10

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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.