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Finding the Fourth Proportional to 13,486,590.30, 20,229,885.45 and 13,486,590.30

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Solution

The fourth proportional to 13,486,590.30, 20,229,885.45 and 13,486,590.30 is: 20,229,885.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,486,590.30 : 20,229,885.45 = 13,486,590.30 : x
  2. Step 2: Convert to fraction form
    13,486,590.30/20,229,885.45 = 13,486,590.30/x
  3. Step 3: Cross multiply
    13,486,590.30x = 20,229,885.45 × 13,486,590.30
  4. Step 4: Simplify right side
    13,486,590.30x = 272,832,176,880,081.12
  5. Step 5: Solve for x
    x = 272,832,176,880,081.12/13,486,590.30
  6. Step 6: Final answer
    x = 20,229,885.45

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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.