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Finding the Fourth Proportional to 10,492,810.80, 15,739,216.20 and 3,768,817.20

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Solution

The fourth proportional to 10,492,810.80, 15,739,216.20 and 3,768,817.20 is: 5,653,225.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,492,810.80 : 15,739,216.20 = 3,768,817.20 : x
  2. Step 2: Convert to fraction form
    10,492,810.80/15,739,216.20 = 3,768,817.20/x
  3. Step 3: Cross multiply
    10,492,810.80x = 15,739,216.20 × 3,768,817.20
  4. Step 4: Simplify right side
    10,492,810.80x = 59,318,228,729,078.64
  5. Step 5: Solve for x
    x = 59,318,228,729,078.64/10,492,810.80
  6. Step 6: Final answer
    x = 5,653,225.80

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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.