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Finding the Fourth Proportional to 616,726.80, 926,040.60 and 336,790.80

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Solution

The fourth proportional to 616,726.80, 926,040.60 and 336,790.80 is: 505,705.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,726.80 : 926,040.60 = 336,790.80 : x
  2. Step 2: Convert to fraction form
    616,726.80/926,040.60 = 336,790.80/x
  3. Step 3: Cross multiply
    616,726.80x = 926,040.60 × 336,790.80
  4. Step 4: Simplify right side
    616,726.80x = 311,881,954,506.48
  5. Step 5: Solve for x
    x = 311,881,954,506.48/616,726.80
  6. Step 6: Final answer
    x = 505,705.21

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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.