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Finding the Fourth Proportional to 42,408,005.80, 63,612,008.70 and 42,408,005.80

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Solution

The fourth proportional to 42,408,005.80, 63,612,008.70 and 42,408,005.80 is: 63,612,008.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,408,005.80 : 63,612,008.70 = 42,408,005.80 : x
  2. Step 2: Convert to fraction form
    42,408,005.80/63,612,008.70 = 42,408,005.80/x
  3. Step 3: Cross multiply
    42,408,005.80x = 63,612,008.70 × 42,408,005.80
  4. Step 4: Simplify right side
    42,408,005.80x = 2,697,658,433,899,250.50
  5. Step 5: Solve for x
    x = 2,697,658,433,899,250.50/42,408,005.80
  6. Step 6: Final answer
    x = 63,612,008.70

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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.