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Finding the Fourth Proportional to 401,658.80, 602,142.60 and 204,666.80

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Solution

The fourth proportional to 401,658.80, 602,142.60 and 204,666.80 is: 306,824.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,658.80 : 602,142.60 = 204,666.80 : x
  2. Step 2: Convert to fraction form
    401,658.80/602,142.60 = 204,666.80/x
  3. Step 3: Cross multiply
    401,658.80x = 602,142.60 × 204,666.80
  4. Step 4: Simplify right side
    401,658.80x = 123,238,599,085.68
  5. Step 5: Solve for x
    x = 123,238,599,085.68/401,658.80
  6. Step 6: Final answer
    x = 306,824.10

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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.