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Finding the Fourth Proportional to 8,806,605.20, 13,209,907.80 and 8,022,784.40

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Solution

The fourth proportional to 8,806,605.20, 13,209,907.80 and 8,022,784.40 is: 12,034,176.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,806,605.20 : 13,209,907.80 = 8,022,784.40 : x
  2. Step 2: Convert to fraction form
    8,806,605.20/13,209,907.80 = 8,022,784.40/x
  3. Step 3: Cross multiply
    8,806,605.20x = 13,209,907.80 × 8,022,784.40
  4. Step 4: Simplify right side
    8,806,605.20x = 105,980,242,223,278.33
  5. Step 5: Solve for x
    x = 105,980,242,223,278.33/8,806,605.20
  6. Step 6: Final answer
    x = 12,034,176.60

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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.