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Finding the Fourth Proportional to 13,902,473.80, 20,853,710.70 and 9,355,700.80

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Solution

The fourth proportional to 13,902,473.80, 20,853,710.70 and 9,355,700.80 is: 14,033,551.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,902,473.80 : 20,853,710.70 = 9,355,700.80 : x
  2. Step 2: Convert to fraction form
    13,902,473.80/20,853,710.70 = 9,355,700.80/x
  3. Step 3: Cross multiply
    13,902,473.80x = 20,853,710.70 × 9,355,700.80
  4. Step 4: Simplify right side
    13,902,473.80x = 195,101,077,878,958.56
  5. Step 5: Solve for x
    x = 195,101,077,878,958.56/13,902,473.80
  6. Step 6: Final answer
    x = 14,033,551.20

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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.