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Finding the Fourth Proportional to 707,758.75, 976,718.21 and 385,468.59

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Solution

The fourth proportional to 707,758.75, 976,718.21 and 385,468.59 is: 531,952.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,758.75 : 976,718.21 = 385,468.59 : x
  2. Step 2: Convert to fraction form
    707,758.75/976,718.21 = 385,468.59/x
  3. Step 3: Cross multiply
    707,758.75x = 976,718.21 × 385,468.59
  4. Step 4: Simplify right side
    707,758.75x = 376,494,191,236.02
  5. Step 5: Solve for x
    x = 376,494,191,236.02/707,758.75
  6. Step 6: Final answer
    x = 531,952.72

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.