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Finding the Fourth Proportional to 1,160,919.40, 1,741,379.10 and 783,005.80

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Solution

The fourth proportional to 1,160,919.40, 1,741,379.10 and 783,005.80 is: 1,174,508.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,160,919.40 : 1,741,379.10 = 783,005.80 : x
  2. Step 2: Convert to fraction form
    1,160,919.40/1,741,379.10 = 783,005.80/x
  3. Step 3: Cross multiply
    1,160,919.40x = 1,741,379.10 × 783,005.80
  4. Step 4: Simplify right side
    1,160,919.40x = 1,363,509,935,298.78
  5. Step 5: Solve for x
    x = 1,363,509,935,298.78/1,160,919.40
  6. Step 6: Final answer
    x = 1,174,508.70

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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.