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Finding the Fourth Proportional to 107,285.07, 148,019.15 and 61,957.07

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Solution

The fourth proportional to 107,285.07, 148,019.15 and 61,957.07 is: 85,480.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,285.07 : 148,019.15 = 61,957.07 : x
  2. Step 2: Convert to fraction form
    107,285.07/148,019.15 = 61,957.07/x
  3. Step 3: Cross multiply
    107,285.07x = 148,019.15 × 61,957.07
  4. Step 4: Simplify right side
    107,285.07x = 9,170,831,788.01
  5. Step 5: Solve for x
    x = 9,170,831,788.01/107,285.07
  6. Step 6: Final answer
    x = 85,480.97

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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.