Home / 81,653,485.80-122,480,228.70-36,215,280.30

Finding the Fourth Proportional to 81,653,485.80, 122,480,228.70 and 36,215,280.30

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Solution

The fourth proportional to 81,653,485.80, 122,480,228.70 and 36,215,280.30 is: 54,322,920.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,653,485.80 : 122,480,228.70 = 36,215,280.30 : x
  2. Step 2: Convert to fraction form
    81,653,485.80/122,480,228.70 = 36,215,280.30/x
  3. Step 3: Cross multiply
    81,653,485.80x = 122,480,228.70 × 36,215,280.30
  4. Step 4: Simplify right side
    81,653,485.80x = 4,435,655,813,578,604.50
  5. Step 5: Solve for x
    x = 4,435,655,813,578,604.50/81,653,485.80
  6. Step 6: Final answer
    x = 54,322,920.45

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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.