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Finding the Fourth Proportional to 553,314.31, 763,606.29 and 338,495.55

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Solution

The fourth proportional to 553,314.31, 763,606.29 and 338,495.55 is: 467,143.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,314.31 : 763,606.29 = 338,495.55 : x
  2. Step 2: Convert to fraction form
    553,314.31/763,606.29 = 338,495.55/x
  3. Step 3: Cross multiply
    553,314.31x = 763,606.29 × 338,495.55
  4. Step 4: Simplify right side
    553,314.31x = 258,477,331,117.01
  5. Step 5: Solve for x
    x = 258,477,331,117.01/553,314.31
  6. Step 6: Final answer
    x = 467,143.77

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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.