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Finding the Fourth Proportional to 662,881.35, 914,750.47 and 405,189.76

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Solution

The fourth proportional to 662,881.35, 914,750.47 and 405,189.76 is: 559,146.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,881.35 : 914,750.47 = 405,189.76 : x
  2. Step 2: Convert to fraction form
    662,881.35/914,750.47 = 405,189.76/x
  3. Step 3: Cross multiply
    662,881.35x = 914,750.47 × 405,189.76
  4. Step 4: Simplify right side
    662,881.35x = 370,647,523,399.19
  5. Step 5: Solve for x
    x = 370,647,523,399.19/662,881.35
  6. Step 6: Final answer
    x = 559,146.10

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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.