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Finding the Fourth Proportional to 6,652,254.10, 9,978,381.15 and 5,217,363.40

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Solution

The fourth proportional to 6,652,254.10, 9,978,381.15 and 5,217,363.40 is: 7,826,045.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,652,254.10 : 9,978,381.15 = 5,217,363.40 : x
  2. Step 2: Convert to fraction form
    6,652,254.10/9,978,381.15 = 5,217,363.40/x
  3. Step 3: Cross multiply
    6,652,254.10x = 9,978,381.15 × 5,217,363.40
  4. Step 4: Simplify right side
    6,652,254.10x = 52,060,840,603,259.91
  5. Step 5: Solve for x
    x = 52,060,840,603,259.91/6,652,254.10
  6. Step 6: Final answer
    x = 7,826,045.10

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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.