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Finding the Fourth Proportional to 73,872,461.40, 110,808,692.10 and 20,019,773.40

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Solution

The fourth proportional to 73,872,461.40, 110,808,692.10 and 20,019,773.40 is: 30,029,660.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,872,461.40 : 110,808,692.10 = 20,019,773.40 : x
  2. Step 2: Convert to fraction form
    73,872,461.40/110,808,692.10 = 20,019,773.40/x
  3. Step 3: Cross multiply
    73,872,461.40x = 110,808,692.10 × 20,019,773.40
  4. Step 4: Simplify right side
    73,872,461.40x = 2,218,364,906,592,369.75
  5. Step 5: Solve for x
    x = 2,218,364,906,592,369.75/73,872,461.40
  6. Step 6: Final answer
    x = 30,029,660.10

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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.