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Finding the Fourth Proportional to 7,689,876.71, 11,528,026.83 and 2,900,929.01

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Solution

The fourth proportional to 7,689,876.71, 11,528,026.83 and 2,900,929.01 is: 4,348,832.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,689,876.71 : 11,528,026.83 = 2,900,929.01 : x
  2. Step 2: Convert to fraction form
    7,689,876.71/11,528,026.83 = 2,900,929.01/x
  3. Step 3: Cross multiply
    7,689,876.71x = 11,528,026.83 × 2,900,929.01
  4. Step 4: Simplify right side
    7,689,876.71x = 33,441,987,401,565.20
  5. Step 5: Solve for x
    x = 33,441,987,401,565.20/7,689,876.71
  6. Step 6: Final answer
    x = 4,348,832.72

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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.