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Finding the Fourth Proportional to 501,188.78, 691,597.73 and 283,386.77

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Solution

The fourth proportional to 501,188.78, 691,597.73 and 283,386.77 is: 391,049.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,188.78 : 691,597.73 = 283,386.77 : x
  2. Step 2: Convert to fraction form
    501,188.78/691,597.73 = 283,386.77/x
  3. Step 3: Cross multiply
    501,188.78x = 691,597.73 × 283,386.77
  4. Step 4: Simplify right side
    501,188.78x = 195,989,641,969.11
  5. Step 5: Solve for x
    x = 195,989,641,969.11/501,188.78
  6. Step 6: Final answer
    x = 391,049.54

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1.5x scale

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.