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Finding the Fourth Proportional to 171,767.28, 257,623.20 and 47,079.12

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Solution

The fourth proportional to 171,767.28, 257,623.20 and 47,079.12 is: 70,611.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,767.28 : 257,623.20 = 47,079.12 : x
  2. Step 2: Convert to fraction form
    171,767.28/257,623.20 = 47,079.12/x
  3. Step 3: Cross multiply
    171,767.28x = 257,623.20 × 47,079.12
  4. Step 4: Simplify right side
    171,767.28x = 12,128,673,547.58
  5. Step 5: Solve for x
    x = 12,128,673,547.58/171,767.28
  6. Step 6: Final answer
    x = 70,611.08

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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.