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Finding the Fourth Proportional to 607,611.11, 838,503.32 and 352,978.70

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Solution

The fourth proportional to 607,611.11, 838,503.32 and 352,978.70 is: 487,110.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,611.11 : 838,503.32 = 352,978.70 : x
  2. Step 2: Convert to fraction form
    607,611.11/838,503.32 = 352,978.70/x
  3. Step 3: Cross multiply
    607,611.11x = 838,503.32 × 352,978.70
  4. Step 4: Simplify right side
    607,611.11x = 295,973,805,881.87
  5. Step 5: Solve for x
    x = 295,973,805,881.87/607,611.11
  6. Step 6: Final answer
    x = 487,110.59

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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.