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Finding the Fourth Proportional to 109,725.90, 164,588.85 and 101,085.90

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Solution

The fourth proportional to 109,725.90, 164,588.85 and 101,085.90 is: 151,628.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,725.90 : 164,588.85 = 101,085.90 : x
  2. Step 2: Convert to fraction form
    109,725.90/164,588.85 = 101,085.90/x
  3. Step 3: Cross multiply
    109,725.90x = 164,588.85 × 101,085.90
  4. Step 4: Simplify right side
    109,725.90x = 16,637,612,032.22
  5. Step 5: Solve for x
    x = 16,637,612,032.22/109,725.90
  6. Step 6: Final answer
    x = 151,628.85

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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.