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Finding the Fourth Proportional to 707,515.41, 976,388.76 and 385,243.14

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Solution

The fourth proportional to 707,515.41, 976,388.76 and 385,243.14 is: 531,645.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,515.41 : 976,388.76 = 385,243.14 : x
  2. Step 2: Convert to fraction form
    707,515.41/976,388.76 = 385,243.14/x
  3. Step 3: Cross multiply
    707,515.41x = 976,388.76 × 385,243.14
  4. Step 4: Simplify right side
    707,515.41x = 376,147,071,763.11
  5. Step 5: Solve for x
    x = 376,147,071,763.11/707,515.41
  6. Step 6: Final answer
    x = 531,645.06

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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.