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Finding the Fourth Proportional to 49,928,165.20, 70,100,985.20 and 49,928,165.20

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Solution

The fourth proportional to 49,928,165.20, 70,100,985.20 and 49,928,165.20 is: 70,100,985.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,928,165.20 : 70,100,985.20 = 49,928,165.20 : x
  2. Step 2: Convert to fraction form
    49,928,165.20/70,100,985.20 = 49,928,165.20/x
  3. Step 3: Cross multiply
    49,928,165.20x = 70,100,985.20 × 49,928,165.20
  4. Step 4: Simplify right side
    49,928,165.20x = 3,500,013,569,748,355.50
  5. Step 5: Solve for x
    x = 3,500,013,569,748,355.50/49,928,165.20
  6. Step 6: Final answer
    x = 70,100,985.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.