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Finding the Fourth Proportional to 994,810.80, 1,492,216.20 and 817,663.80

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Solution

The fourth proportional to 994,810.80, 1,492,216.20 and 817,663.80 is: 1,226,495.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    994,810.80 : 1,492,216.20 = 817,663.80 : x
  2. Step 2: Convert to fraction form
    994,810.80/1,492,216.20 = 817,663.80/x
  3. Step 3: Cross multiply
    994,810.80x = 1,492,216.20 × 817,663.80
  4. Step 4: Simplify right side
    994,810.80x = 1,220,131,168,513.56
  5. Step 5: Solve for x
    x = 1,220,131,168,513.56/994,810.80
  6. Step 6: Final answer
    x = 1,226,495.70

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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.