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Finding the Fourth Proportional to 6,655,545.63, 9,984,314.88 and 2,105,082.09

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Solution

The fourth proportional to 6,655,545.63, 9,984,314.88 and 2,105,082.09 is: 3,157,938.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,655,545.63 : 9,984,314.88 = 2,105,082.09 : x
  2. Step 2: Convert to fraction form
    6,655,545.63/9,984,314.88 = 2,105,082.09/x
  3. Step 3: Cross multiply
    6,655,545.63x = 9,984,314.88 × 2,105,082.09
  4. Step 4: Simplify right side
    6,655,545.63x = 21,017,802,434,808.50
  5. Step 5: Solve for x
    x = 21,017,802,434,808.50/6,655,545.63
  6. Step 6: Final answer
    x = 3,157,938.30

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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.