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Finding the Fourth Proportional to 85,396.98, 117,848.78 and 47,156.48

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Solution

The fourth proportional to 85,396.98, 117,848.78 and 47,156.48 is: 65,076.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,396.98 : 117,848.78 = 47,156.48 : x
  2. Step 2: Convert to fraction form
    85,396.98/117,848.78 = 47,156.48/x
  3. Step 3: Cross multiply
    85,396.98x = 117,848.78 × 47,156.48
  4. Step 4: Simplify right side
    85,396.98x = 5,557,333,430.84
  5. Step 5: Solve for x
    x = 5,557,333,430.84/85,396.98
  6. Step 6: Final answer
    x = 65,076.46

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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.