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Finding the Fourth Proportional to 285,500.41, 427,783.42 and 172,839.15

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Solution

The fourth proportional to 285,500.41, 427,783.42 and 172,839.15 is: 258,975.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,500.41 : 427,783.42 = 172,839.15 : x
  2. Step 2: Convert to fraction form
    285,500.41/427,783.42 = 172,839.15/x
  3. Step 3: Cross multiply
    285,500.41x = 427,783.42 × 172,839.15
  4. Step 4: Simplify right side
    285,500.41x = 73,937,722,696.89
  5. Step 5: Solve for x
    x = 73,937,722,696.89/285,500.41
  6. Step 6: Final answer
    x = 258,975.89

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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.