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Finding the Fourth Proportional to 292,896.72, 439,347.42 and 191,780.01

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Solution

The fourth proportional to 292,896.72, 439,347.42 and 191,780.01 is: 287,671.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,896.72 : 439,347.42 = 191,780.01 : x
  2. Step 2: Convert to fraction form
    292,896.72/439,347.42 = 191,780.01/x
  3. Step 3: Cross multiply
    292,896.72x = 439,347.42 × 191,780.01
  4. Step 4: Simplify right side
    292,896.72x = 84,258,052,601.07
  5. Step 5: Solve for x
    x = 84,258,052,601.07/292,896.72
  6. Step 6: Final answer
    x = 287,671.55

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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.