Home / 85,536,019.90-128,304,029.85-83,835,408.70

Finding the Fourth Proportional to 85,536,019.90, 128,304,029.85 and 83,835,408.70

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Solution

The fourth proportional to 85,536,019.90, 128,304,029.85 and 83,835,408.70 is: 125,753,113.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,536,019.90 : 128,304,029.85 = 83,835,408.70 : x
  2. Step 2: Convert to fraction form
    85,536,019.90/128,304,029.85 = 83,835,408.70/x
  3. Step 3: Cross multiply
    85,536,019.90x = 128,304,029.85 × 83,835,408.70
  4. Step 4: Simplify right side
    85,536,019.90x = 10,756,420,780,331,750
  5. Step 5: Solve for x
    x = 10,756,420,780,331,750/85,536,019.90
  6. Step 6: Final answer
    x = 125,753,113.05

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1.5x scale

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.