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Finding the Fourth Proportional to 85,876,529.55, 128,814,794.33 and 85,876,529.55

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Solution

The fourth proportional to 85,876,529.55, 128,814,794.33 and 85,876,529.55 is: 128,814,794.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,876,529.55 : 128,814,794.33 = 85,876,529.55 : x
  2. Step 2: Convert to fraction form
    85,876,529.55/128,814,794.33 = 85,876,529.55/x
  3. Step 3: Cross multiply
    85,876,529.55x = 128,814,794.33 × 85,876,529.55
  4. Step 4: Simplify right side
    85,876,529.55x = 11,062,167,491,328,034
  5. Step 5: Solve for x
    x = 11,062,167,491,328,034/85,876,529.55
  6. Step 6: Final answer
    x = 128,814,794.33

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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.