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Finding the Fourth Proportional to 30,479.71, 42,061.02 and 17,050.67

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Solution

The fourth proportional to 30,479.71, 42,061.02 and 17,050.67 is: 23,529.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,479.71 : 42,061.02 = 17,050.67 : x
  2. Step 2: Convert to fraction form
    30,479.71/42,061.02 = 17,050.67/x
  3. Step 3: Cross multiply
    30,479.71x = 42,061.02 × 17,050.67
  4. Step 4: Simplify right side
    30,479.71x = 717,168,634.41
  5. Step 5: Solve for x
    x = 717,168,634.41/30,479.71
  6. Step 6: Final answer
    x = 23,529.38

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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.