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Finding the Fourth Proportional to 125,955.61, 188,011.88 and 111,009.35

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Solution

The fourth proportional to 125,955.61, 188,011.88 and 111,009.35 is: 165,701.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,955.61 : 188,011.88 = 111,009.35 : x
  2. Step 2: Convert to fraction form
    125,955.61/188,011.88 = 111,009.35/x
  3. Step 3: Cross multiply
    125,955.61x = 188,011.88 × 111,009.35
  4. Step 4: Simplify right side
    125,955.61x = 20,871,077,546.77
  5. Step 5: Solve for x
    x = 20,871,077,546.77/125,955.61
  6. Step 6: Final answer
    x = 165,701.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.