Home / 20,178,039.20-30,267,058.80-19,989,082.40

Finding the Fourth Proportional to 20,178,039.20, 30,267,058.80 and 19,989,082.40

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Solution

The fourth proportional to 20,178,039.20, 30,267,058.80 and 19,989,082.40 is: 29,983,623.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178,039.20 : 30,267,058.80 = 19,989,082.40 : x
  2. Step 2: Convert to fraction form
    20,178,039.20/30,267,058.80 = 19,989,082.40/x
  3. Step 3: Cross multiply
    20,178,039.20x = 30,267,058.80 × 19,989,082.40
  4. Step 4: Simplify right side
    20,178,039.20x = 605,010,732,358,845.12
  5. Step 5: Solve for x
    x = 605,010,732,358,845.12/20,178,039.20
  6. Step 6: Final answer
    x = 29,983,623.60

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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.