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Finding the Fourth Proportional to 292,443.91, 438,665.86 and 105,455.41

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Solution

The fourth proportional to 292,443.91, 438,665.86 and 105,455.41 is: 158,183.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,443.91 : 438,665.86 = 105,455.41 : x
  2. Step 2: Convert to fraction form
    292,443.91/438,665.86 = 105,455.41/x
  3. Step 3: Cross multiply
    292,443.91x = 438,665.86 × 105,455.41
  4. Step 4: Simplify right side
    292,443.91x = 46,259,688,119.30
  5. Step 5: Solve for x
    x = 46,259,688,119.30/292,443.91
  6. Step 6: Final answer
    x = 158,183.11

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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.