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Finding the Fourth Proportional to 8,806,985.20, 13,210,477.80 and 8,806,985.20

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Solution

The fourth proportional to 8,806,985.20, 13,210,477.80 and 8,806,985.20 is: 13,210,477.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,806,985.20 : 13,210,477.80 = 8,806,985.20 : x
  2. Step 2: Convert to fraction form
    8,806,985.20/13,210,477.80 = 8,806,985.20/x
  3. Step 3: Cross multiply
    8,806,985.20x = 13,210,477.80 × 8,806,985.20
  4. Step 4: Simplify right side
    8,806,985.20x = 116,344,482,469,528.56
  5. Step 5: Solve for x
    x = 116,344,482,469,528.56/8,806,985.20
  6. Step 6: Final answer
    x = 13,210,477.80

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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.