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Finding the Fourth Proportional to 9,859,138.50, 13,605,518.25 and 5,508,974.10

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Solution

The fourth proportional to 9,859,138.50, 13,605,518.25 and 5,508,974.10 is: 7,602,332.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,859,138.50 : 13,605,518.25 = 5,508,974.10 : x
  2. Step 2: Convert to fraction form
    9,859,138.50/13,605,518.25 = 5,508,974.10/x
  3. Step 3: Cross multiply
    9,859,138.50x = 13,605,518.25 × 5,508,974.10
  4. Step 4: Simplify right side
    9,859,138.50x = 74,952,447,656,327.31
  5. Step 5: Solve for x
    x = 74,952,447,656,327.31/9,859,138.50
  6. Step 6: Final answer
    x = 7,602,332.36

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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.