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Finding the Fourth Proportional to 144,201, 215,999.88 and 115,968.18

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Solution

The fourth proportional to 144,201, 215,999.88 and 115,968.18 is: 173,709.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,201 : 215,999.88 = 115,968.18 : x
  2. Step 2: Convert to fraction form
    144,201/215,999.88 = 115,968.18/x
  3. Step 3: Cross multiply
    144,201x = 215,999.88 × 115,968.18
  4. Step 4: Simplify right side
    144,201x = 25,049,112,963.82
  5. Step 5: Solve for x
    x = 25,049,112,963.82/144,201
  6. Step 6: Final answer
    x = 173,709.70

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1.5x scale

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.