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Finding the Fourth Proportional to 7,182,684.04, 9,912,314.30 and 3,919,709.03

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Solution

The fourth proportional to 7,182,684.04, 9,912,314.30 and 3,919,709.03 is: 5,409,313.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,182,684.04 : 9,912,314.30 = 3,919,709.03 : x
  2. Step 2: Convert to fraction form
    7,182,684.04/9,912,314.30 = 3,919,709.03/x
  3. Step 3: Cross multiply
    7,182,684.04x = 9,912,314.30 × 3,919,709.03
  4. Step 4: Simplify right side
    7,182,684.04x = 38,853,387,869,908.13
  5. Step 5: Solve for x
    x = 38,853,387,869,908.13/7,182,684.04
  6. Step 6: Final answer
    x = 5,409,313.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.