Home / 85,687,072,337.70-128,530,608,506.55-76,381,327,851.30

Finding the Fourth Proportional to 85,687,072,337.70, 128,530,608,506.55 and 76,381,327,851.30

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Solution

The fourth proportional to 85,687,072,337.70, 128,530,608,506.55 and 76,381,327,851.30 is: 114,571,991,776.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,687,072,337.70 : 128,530,608,506.55 = 76,381,327,851.30 : x
  2. Step 2: Convert to fraction form
    85,687,072,337.70/128,530,608,506.55 = 76,381,327,851.30/x
  3. Step 3: Cross multiply
    85,687,072,337.70x = 128,530,608,506.55 × 76,381,327,851.30
  4. Step 4: Simplify right side
    85,687,072,337.70x = 9,817,338,547,265,884,651,520
  5. Step 5: Solve for x
    x = 9,817,338,547,265,884,651,520/85,687,072,337.70
  6. Step 6: Final answer
    x = 114,571,991,776.95

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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.