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Finding the Fourth Proportional to 1,191,733.83, 1,787,221.13 and 392,866.47

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Solution

The fourth proportional to 1,191,733.83, 1,787,221.13 and 392,866.47 is: 589,174.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,733.83 : 1,787,221.13 = 392,866.47 : x
  2. Step 2: Convert to fraction form
    1,191,733.83/1,787,221.13 = 392,866.47/x
  3. Step 3: Cross multiply
    1,191,733.83x = 1,787,221.13 × 392,866.47
  4. Step 4: Simplify right side
    1,191,733.83x = 702,139,254,488.18
  5. Step 5: Solve for x
    x = 702,139,254,488.18/1,191,733.83
  6. Step 6: Final answer
    x = 589,174.56

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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.