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Finding the Fourth Proportional to 8,793,581.40, 13,191,684.30 and 3,113,359.20

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Solution

The fourth proportional to 8,793,581.40, 13,191,684.30 and 3,113,359.20 is: 4,670,503.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,793,581.40 : 13,191,684.30 = 3,113,359.20 : x
  2. Step 2: Convert to fraction form
    8,793,581.40/13,191,684.30 = 3,113,359.20/x
  3. Step 3: Cross multiply
    8,793,581.40x = 13,191,684.30 × 3,113,359.20
  4. Step 4: Simplify right side
    8,793,581.40x = 41,070,451,678,900.56
  5. Step 5: Solve for x
    x = 41,070,451,678,900.56/8,793,581.40
  6. Step 6: Final answer
    x = 4,670,503.38

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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.