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Finding the Fourth Proportional to 622,762.60, 859,572.70 and 405,513.52

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Solution

The fourth proportional to 622,762.60, 859,572.70 and 405,513.52 is: 559,713.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,762.60 : 859,572.70 = 405,513.52 : x
  2. Step 2: Convert to fraction form
    622,762.60/859,572.70 = 405,513.52/x
  3. Step 3: Cross multiply
    622,762.60x = 859,572.70 × 405,513.52
  4. Step 4: Simplify right side
    622,762.60x = 348,568,351,272.90
  5. Step 5: Solve for x
    x = 348,568,351,272.90/622,762.60
  6. Step 6: Final answer
    x = 559,713.05

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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.