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Finding the Fourth Proportional to 292,903.53, 439,355.31 and 105,871.29

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Solution

The fourth proportional to 292,903.53, 439,355.31 and 105,871.29 is: 158,806.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,903.53 : 439,355.31 = 105,871.29 : x
  2. Step 2: Convert to fraction form
    292,903.53/439,355.31 = 105,871.29/x
  3. Step 3: Cross multiply
    292,903.53x = 439,355.31 × 105,871.29
  4. Step 4: Simplify right side
    292,903.53x = 46,515,113,438.05
  5. Step 5: Solve for x
    x = 46,515,113,438.05/292,903.53
  6. Step 6: Final answer
    x = 158,806.94

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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.