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Finding the Fourth Proportional to 4,889,711.05, 7,329,317.78 and 1,855,904.65

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Solution

The fourth proportional to 4,889,711.05, 7,329,317.78 and 1,855,904.65 is: 2,781,864.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,889,711.05 : 7,329,317.78 = 1,855,904.65 : x
  2. Step 2: Convert to fraction form
    4,889,711.05/7,329,317.78 = 1,855,904.65/x
  3. Step 3: Cross multiply
    4,889,711.05x = 7,329,317.78 × 1,855,904.65
  4. Step 4: Simplify right side
    4,889,711.05x = 13,602,514,939,950.15
  5. Step 5: Solve for x
    x = 13,602,514,939,950.15/4,889,711.05
  6. Step 6: Final answer
    x = 2,781,864.78

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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.