Home / 86,640,192,101.70-129,960,288,152.55-74,655,984,975.30

Finding the Fourth Proportional to 86,640,192,101.70, 129,960,288,152.55 and 74,655,984,975.30

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Solution

The fourth proportional to 86,640,192,101.70, 129,960,288,152.55 and 74,655,984,975.30 is: 111,983,977,462.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,640,192,101.70 : 129,960,288,152.55 = 74,655,984,975.30 : x
  2. Step 2: Convert to fraction form
    86,640,192,101.70/129,960,288,152.55 = 74,655,984,975.30/x
  3. Step 3: Cross multiply
    86,640,192,101.70x = 129,960,288,152.55 × 74,655,984,975.30
  4. Step 4: Simplify right side
    86,640,192,101.70x = 9,702,313,319,702,431,006,720
  5. Step 5: Solve for x
    x = 9,702,313,319,702,431,006,720/86,640,192,101.70
  6. Step 6: Final answer
    x = 111,983,977,462.95

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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.