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Finding the Fourth Proportional to 201,507.39, 278,080.19 and 110,861.41

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Solution

The fourth proportional to 201,507.39, 278,080.19 and 110,861.41 is: 152,988.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,507.39 : 278,080.19 = 110,861.41 : x
  2. Step 2: Convert to fraction form
    201,507.39/278,080.19 = 110,861.41/x
  3. Step 3: Cross multiply
    201,507.39x = 278,080.19 × 110,861.41
  4. Step 4: Simplify right side
    201,507.39x = 30,828,360,011.76
  5. Step 5: Solve for x
    x = 30,828,360,011.76/201,507.39
  6. Step 6: Final answer
    x = 152,988.73

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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.