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Finding the Fourth Proportional to 85,065.15, 117,393.81 and 47,341.83

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Solution

The fourth proportional to 85,065.15, 117,393.81 and 47,341.83 is: 65,333.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,065.15 : 117,393.81 = 47,341.83 : x
  2. Step 2: Convert to fraction form
    85,065.15/117,393.81 = 47,341.83/x
  3. Step 3: Cross multiply
    85,065.15x = 117,393.81 × 47,341.83
  4. Step 4: Simplify right side
    85,065.15x = 5,557,637,796.07
  5. Step 5: Solve for x
    x = 5,557,637,796.07/85,065.15
  6. Step 6: Final answer
    x = 65,333.90

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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.