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Finding the Fourth Proportional to 118,959.19, 178,382.28 and 69,054.59

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Solution

The fourth proportional to 118,959.19, 178,382.28 and 69,054.59 is: 103,549.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,959.19 : 178,382.28 = 69,054.59 : x
  2. Step 2: Convert to fraction form
    118,959.19/178,382.28 = 69,054.59/x
  3. Step 3: Cross multiply
    118,959.19x = 178,382.28 × 69,054.59
  4. Step 4: Simplify right side
    118,959.19x = 12,318,115,208.67
  5. Step 5: Solve for x
    x = 12,318,115,208.67/118,959.19
  6. Step 6: Final answer
    x = 103,549.08

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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.