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Finding the Fourth Proportional to 117,907.15, 176,749.55 and 58,686.84

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Solution

The fourth proportional to 117,907.15, 176,749.55 and 58,686.84 is: 87,974.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,907.15 : 176,749.55 = 58,686.84 : x
  2. Step 2: Convert to fraction form
    117,907.15/176,749.55 = 58,686.84/x
  3. Step 3: Cross multiply
    117,907.15x = 176,749.55 × 58,686.84
  4. Step 4: Simplify right side
    117,907.15x = 10,372,871,383.74
  5. Step 5: Solve for x
    x = 10,372,871,383.74/117,907.15
  6. Step 6: Final answer
    x = 87,974.91

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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.