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Finding the Fourth Proportional to 72,972.78, 100,703.70 and 44,293.11

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Solution

The fourth proportional to 72,972.78, 100,703.70 and 44,293.11 is: 61,125.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,972.78 : 100,703.70 = 44,293.11 : x
  2. Step 2: Convert to fraction form
    72,972.78/100,703.70 = 44,293.11/x
  3. Step 3: Cross multiply
    72,972.78x = 100,703.70 × 44,293.11
  4. Step 4: Simplify right side
    72,972.78x = 4,460,480,061.51
  5. Step 5: Solve for x
    x = 4,460,480,061.51/72,972.78
  6. Step 6: Final answer
    x = 61,125.26

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Why These Related Problems?

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