Home / 18,165,394.38-25,068,061.20-9,905,435.79

Finding the Fourth Proportional to 18,165,394.38, 25,068,061.20 and 9,905,435.79

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Solution

The fourth proportional to 18,165,394.38, 25,068,061.20 and 9,905,435.79 is: 13,669,401.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,165,394.38 : 25,068,061.20 = 9,905,435.79 : x
  2. Step 2: Convert to fraction form
    18,165,394.38/25,068,061.20 = 9,905,435.79/x
  3. Step 3: Cross multiply
    18,165,394.38x = 25,068,061.20 × 9,905,435.79
  4. Step 4: Simplify right side
    18,165,394.38x = 248,310,070,596,390.31
  5. Step 5: Solve for x
    x = 248,310,070,596,390.31/18,165,394.38
  6. Step 6: Final answer
    x = 13,669,401.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.