Home / 85,066,287.60-127,599,431.40-80,587,311.60

Finding the Fourth Proportional to 85,066,287.60, 127,599,431.40 and 80,587,311.60

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Solution

The fourth proportional to 85,066,287.60, 127,599,431.40 and 80,587,311.60 is: 120,880,967.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,066,287.60 : 127,599,431.40 = 80,587,311.60 : x
  2. Step 2: Convert to fraction form
    85,066,287.60/127,599,431.40 = 80,587,311.60/x
  3. Step 3: Cross multiply
    85,066,287.60x = 127,599,431.40 × 80,587,311.60
  4. Step 4: Simplify right side
    85,066,287.60x = 10,282,895,138,214,624
  5. Step 5: Solve for x
    x = 10,282,895,138,214,624/85,066,287.60
  6. Step 6: Final answer
    x = 120,880,967.40

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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.