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Finding the Fourth Proportional to 504,043.40, 756,065.10 and 171,619.40

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Solution

The fourth proportional to 504,043.40, 756,065.10 and 171,619.40 is: 257,429.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,043.40 : 756,065.10 = 171,619.40 : x
  2. Step 2: Convert to fraction form
    504,043.40/756,065.10 = 171,619.40/x
  3. Step 3: Cross multiply
    504,043.40x = 756,065.10 × 171,619.40
  4. Step 4: Simplify right side
    504,043.40x = 129,755,438,822.94
  5. Step 5: Solve for x
    x = 129,755,438,822.94/504,043.40
  6. Step 6: Final answer
    x = 257,429.10

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Double scale
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Similar ratio
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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.