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Finding the Fourth Proportional to 38,868.50, 53,638.54 and 22,101.50

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Solution

The fourth proportional to 38,868.50, 53,638.54 and 22,101.50 is: 30,500.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,868.50 : 53,638.54 = 22,101.50 : x
  2. Step 2: Convert to fraction form
    38,868.50/53,638.54 = 22,101.50/x
  3. Step 3: Cross multiply
    38,868.50x = 53,638.54 × 22,101.50
  4. Step 4: Simplify right side
    38,868.50x = 1,185,492,191.81
  5. Step 5: Solve for x
    x = 1,185,492,191.81/38,868.50
  6. Step 6: Final answer
    x = 30,500.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.