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Finding the Fourth Proportional to 622,781.34, 859,501.74 and 381,223.55

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Solution

The fourth proportional to 622,781.34, 859,501.74 and 381,223.55 is: 526,127.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,781.34 : 859,501.74 = 381,223.55 : x
  2. Step 2: Convert to fraction form
    622,781.34/859,501.74 = 381,223.55/x
  3. Step 3: Cross multiply
    622,781.34x = 859,501.74 × 381,223.55
  4. Step 4: Simplify right side
    622,781.34x = 327,662,300,256.47
  5. Step 5: Solve for x
    x = 327,662,300,256.47/622,781.34
  6. Step 6: Final answer
    x = 526,127.36

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