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Finding the Fourth Proportional to 8,793,608.40, 13,191,724.80 and 3,113,386.20

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Solution

The fourth proportional to 8,793,608.40, 13,191,724.80 and 3,113,386.20 is: 4,670,543.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,793,608.40 : 13,191,724.80 = 3,113,386.20 : x
  2. Step 2: Convert to fraction form
    8,793,608.40/13,191,724.80 = 3,113,386.20/x
  3. Step 3: Cross multiply
    8,793,608.40x = 13,191,724.80 × 3,113,386.20
  4. Step 4: Simplify right side
    8,793,608.40x = 41,070,933,946,517.77
  5. Step 5: Solve for x
    x = 41,070,933,946,517.77/8,793,608.40
  6. Step 6: Final answer
    x = 4,670,543.89

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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.