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Finding the Fourth Proportional to 613,818.60, 847,112.25 and 372,111.36

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Solution

The fourth proportional to 613,818.60, 847,112.25 and 372,111.36 is: 513,539.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,818.60 : 847,112.25 = 372,111.36 : x
  2. Step 2: Convert to fraction form
    613,818.60/847,112.25 = 372,111.36/x
  3. Step 3: Cross multiply
    613,818.60x = 847,112.25 × 372,111.36
  4. Step 4: Simplify right side
    613,818.60x = 315,220,091,420.16
  5. Step 5: Solve for x
    x = 315,220,091,420.16/613,818.60
  6. Step 6: Final answer
    x = 513,539.49

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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.