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Finding the Fourth Proportional to 171,678.74, 257,532.75 and 47,019.86

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Solution

The fourth proportional to 171,678.74, 257,532.75 and 47,019.86 is: 70,533.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,678.74 : 257,532.75 = 47,019.86 : x
  2. Step 2: Convert to fraction form
    171,678.74/257,532.75 = 47,019.86/x
  3. Step 3: Cross multiply
    171,678.74x = 257,532.75 × 47,019.86
  4. Step 4: Simplify right side
    171,678.74x = 12,109,153,850.42
  5. Step 5: Solve for x
    x = 12,109,153,850.42/171,678.74
  6. Step 6: Final answer
    x = 70,533.80

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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.