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Finding the Fourth Proportional to 707,352.60, 976,116.72 and 385,056

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Solution

The fourth proportional to 707,352.60, 976,116.72 and 385,056 is: 531,361.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,352.60 : 976,116.72 = 385,056 : x
  2. Step 2: Convert to fraction form
    707,352.60/976,116.72 = 385,056/x
  3. Step 3: Cross multiply
    707,352.60x = 976,116.72 × 385,056
  4. Step 4: Simplify right side
    707,352.60x = 375,859,599,736.32
  5. Step 5: Solve for x
    x = 375,859,599,736.32/707,352.60
  6. Step 6: Final answer
    x = 531,361.02

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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.