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Finding the Fourth Proportional to 816,762.57, 1,127,079 and 454,172.96

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Solution

The fourth proportional to 816,762.57, 1,127,079 and 454,172.96 is: 626,729.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,762.57 : 1,127,079 = 454,172.96 : x
  2. Step 2: Convert to fraction form
    816,762.57/1,127,079 = 454,172.96/x
  3. Step 3: Cross multiply
    816,762.57x = 1,127,079 × 454,172.96
  4. Step 4: Simplify right side
    816,762.57x = 511,888,799,948.45
  5. Step 5: Solve for x
    x = 511,888,799,948.45/816,762.57
  6. Step 6: Final answer
    x = 626,729.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.