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Finding the Fourth Proportional to 563,980.50, 778,479.22 and 504,193.40

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Solution

The fourth proportional to 563,980.50, 778,479.22 and 504,193.40 is: 695,953.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,980.50 : 778,479.22 = 504,193.40 : x
  2. Step 2: Convert to fraction form
    563,980.50/778,479.22 = 504,193.40/x
  3. Step 3: Cross multiply
    563,980.50x = 778,479.22 × 504,193.40
  4. Step 4: Simplify right side
    563,980.50x = 392,504,084,761.15
  5. Step 5: Solve for x
    x = 392,504,084,761.15/563,980.50
  6. Step 6: Final answer
    x = 695,953.29

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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.