Home / 81,673,419.10-122,510,128.65-36,239,806.30

Finding the Fourth Proportional to 81,673,419.10, 122,510,128.65 and 36,239,806.30

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Solution

The fourth proportional to 81,673,419.10, 122,510,128.65 and 36,239,806.30 is: 54,359,709.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,673,419.10 : 122,510,128.65 = 36,239,806.30 : x
  2. Step 2: Convert to fraction form
    81,673,419.10/122,510,128.65 = 36,239,806.30/x
  3. Step 3: Cross multiply
    81,673,419.10x = 122,510,128.65 × 36,239,806.30
  4. Step 4: Simplify right side
    81,673,419.10x = 4,439,743,332,064,080.50
  5. Step 5: Solve for x
    x = 4,439,743,332,064,080.50/81,673,419.10
  6. Step 6: Final answer
    x = 54,359,709.45

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Double scale
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Similar ratio
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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.