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Finding the Fourth Proportional to 85,503.61, 117,994.62 and 47,777.86

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Solution

The fourth proportional to 85,503.61, 117,994.62 and 47,777.86 is: 65,933.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,503.61 : 117,994.62 = 47,777.86 : x
  2. Step 2: Convert to fraction form
    85,503.61/117,994.62 = 47,777.86/x
  3. Step 3: Cross multiply
    85,503.61x = 117,994.62 × 47,777.86
  4. Step 4: Simplify right side
    85,503.61x = 5,637,530,435.11
  5. Step 5: Solve for x
    x = 5,637,530,435.11/85,503.61
  6. Step 6: Final answer
    x = 65,933.24

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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.