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Finding the Fourth Proportional to 12,480,932.40, 18,700,403.40 and 10,675,345.20

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Solution

The fourth proportional to 12,480,932.40, 18,700,403.40 and 10,675,345.20 is: 15,995,059.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480,932.40 : 18,700,403.40 = 10,675,345.20 : x
  2. Step 2: Convert to fraction form
    12,480,932.40/18,700,403.40 = 10,675,345.20/x
  3. Step 3: Cross multiply
    12,480,932.40x = 18,700,403.40 × 10,675,345.20
  4. Step 4: Simplify right side
    12,480,932.40x = 199,633,261,674,253.66
  5. Step 5: Solve for x
    x = 199,633,261,674,253.66/12,480,932.40
  6. Step 6: Final answer
    x = 15,995,059.93

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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.