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Finding the Fourth Proportional to 677,112.40, 933,990.60 and 435,708.88

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Solution

The fourth proportional to 677,112.40, 933,990.60 and 435,708.88 is: 601,005.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,112.40 : 933,990.60 = 435,708.88 : x
  2. Step 2: Convert to fraction form
    677,112.40/933,990.60 = 435,708.88/x
  3. Step 3: Cross multiply
    677,112.40x = 933,990.60 × 435,708.88
  4. Step 4: Simplify right side
    677,112.40x = 406,947,998,256.53
  5. Step 5: Solve for x
    x = 406,947,998,256.53/677,112.40
  6. Step 6: Final answer
    x = 601,005.09

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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.