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Finding the Fourth Proportional to 692,925, 956,236.56 and 391,138.44

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Solution

The fourth proportional to 692,925, 956,236.56 and 391,138.44 is: 539,771.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,925 : 956,236.56 = 391,138.44 : x
  2. Step 2: Convert to fraction form
    692,925/956,236.56 = 391,138.44/x
  3. Step 3: Cross multiply
    692,925x = 956,236.56 × 391,138.44
  4. Step 4: Simplify right side
    692,925x = 374,020,876,349.37
  5. Step 5: Solve for x
    x = 374,020,876,349.37/692,925
  6. Step 6: Final answer
    x = 539,771.08

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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.