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Finding the Fourth Proportional to 662,645.86, 914,427.28 and 404,953.93

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Solution

The fourth proportional to 662,645.86, 914,427.28 and 404,953.93 is: 558,821.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,645.86 : 914,427.28 = 404,953.93 : x
  2. Step 2: Convert to fraction form
    662,645.86/914,427.28 = 404,953.93/x
  3. Step 3: Cross multiply
    662,645.86x = 914,427.28 × 404,953.93
  4. Step 4: Simplify right side
    662,645.86x = 370,300,920,735.21
  5. Step 5: Solve for x
    x = 370,300,920,735.21/662,645.86
  6. Step 6: Final answer
    x = 558,821.75

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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.