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Finding the Fourth Proportional to 77,373.61, 106,794.55 and 47,175.56

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Solution

The fourth proportional to 77,373.61, 106,794.55 and 47,175.56 is: 65,113.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,373.61 : 106,794.55 = 47,175.56 : x
  2. Step 2: Convert to fraction form
    77,373.61/106,794.55 = 47,175.56/x
  3. Step 3: Cross multiply
    77,373.61x = 106,794.55 × 47,175.56
  4. Step 4: Simplify right side
    77,373.61x = 5,038,092,850.25
  5. Step 5: Solve for x
    x = 5,038,092,850.25/77,373.61
  6. Step 6: Final answer
    x = 65,113.84

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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.