Home / 12,123,912.80-18,185,869.20-10,565,019.20

Finding the Fourth Proportional to 12,123,912.80, 18,185,869.20 and 10,565,019.20

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Solution

The fourth proportional to 12,123,912.80, 18,185,869.20 and 10,565,019.20 is: 15,847,528.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,123,912.80 : 18,185,869.20 = 10,565,019.20 : x
  2. Step 2: Convert to fraction form
    12,123,912.80/18,185,869.20 = 10,565,019.20/x
  3. Step 3: Cross multiply
    12,123,912.80x = 18,185,869.20 × 10,565,019.20
  4. Step 4: Simplify right side
    12,123,912.80x = 192,134,057,266,688.62
  5. Step 5: Solve for x
    x = 192,134,057,266,688.62/12,123,912.80
  6. Step 6: Final answer
    x = 15,847,528.80

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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.