Home / 85,215,747.60-127,823,621.40-71,043,987.60

Finding the Fourth Proportional to 85,215,747.60, 127,823,621.40 and 71,043,987.60

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Solution

The fourth proportional to 85,215,747.60, 127,823,621.40 and 71,043,987.60 is: 106,565,981.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,215,747.60 : 127,823,621.40 = 71,043,987.60 : x
  2. Step 2: Convert to fraction form
    85,215,747.60/127,823,621.40 = 71,043,987.60/x
  3. Step 3: Cross multiply
    85,215,747.60x = 127,823,621.40 × 71,043,987.60
  4. Step 4: Simplify right side
    85,215,747.60x = 9,081,099,773,728,694
  5. Step 5: Solve for x
    x = 9,081,099,773,728,694/85,215,747.60
  6. Step 6: Final answer
    x = 106,565,981.40

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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.