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Finding the Fourth Proportional to 580,219.80, 870,329.70 and 367,643.40

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Solution

The fourth proportional to 580,219.80, 870,329.70 and 367,643.40 is: 551,465.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,219.80 : 870,329.70 = 367,643.40 : x
  2. Step 2: Convert to fraction form
    580,219.80/870,329.70 = 367,643.40/x
  3. Step 3: Cross multiply
    580,219.80x = 870,329.70 × 367,643.40
  4. Step 4: Simplify right side
    580,219.80x = 319,970,970,028.98
  5. Step 5: Solve for x
    x = 319,970,970,028.98/580,219.80
  6. Step 6: Final answer
    x = 551,465.10

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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.