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Finding the Fourth Proportional to 66,717.14, 100,073.88 and 19,332.14

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Solution

The fourth proportional to 66,717.14, 100,073.88 and 19,332.14 is: 28,997.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,717.14 : 100,073.88 = 19,332.14 : x
  2. Step 2: Convert to fraction form
    66,717.14/100,073.88 = 19,332.14/x
  3. Step 3: Cross multiply
    66,717.14x = 100,073.88 × 19,332.14
  4. Step 4: Simplify right side
    66,717.14x = 1,934,641,758.13
  5. Step 5: Solve for x
    x = 1,934,641,758.13/66,717.14
  6. Step 6: Final answer
    x = 28,997.67

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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.