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Finding the Fourth Proportional to 18,899,002.11, 28,352,637.54 and 6,120,798.51

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Solution

The fourth proportional to 18,899,002.11, 28,352,637.54 and 6,120,798.51 is: 9,182,536.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,899,002.11 : 28,352,637.54 = 6,120,798.51 : x
  2. Step 2: Convert to fraction form
    18,899,002.11/28,352,637.54 = 6,120,798.51/x
  3. Step 3: Cross multiply
    18,899,002.11x = 28,352,637.54 × 6,120,798.51
  4. Step 4: Simplify right side
    18,899,002.11x = 173,540,781,609,402.06
  5. Step 5: Solve for x
    x = 173,540,781,609,402.06/18,899,002.11
  6. Step 6: Final answer
    x = 9,182,536.76

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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.