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Finding the Fourth Proportional to 18,887,573.60, 28,331,360.40 and 16,655,521.40

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Solution

The fourth proportional to 18,887,573.60, 28,331,360.40 and 16,655,521.40 is: 24,983,282.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887,573.60 : 28,331,360.40 = 16,655,521.40 : x
  2. Step 2: Convert to fraction form
    18,887,573.60/28,331,360.40 = 16,655,521.40/x
  3. Step 3: Cross multiply
    18,887,573.60x = 28,331,360.40 × 16,655,521.40
  4. Step 4: Simplify right side
    18,887,573.60x = 471,873,579,433,312.56
  5. Step 5: Solve for x
    x = 471,873,579,433,312.56/18,887,573.60
  6. Step 6: Final answer
    x = 24,983,282.10

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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.