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Finding the Fourth Proportional to 85,762.88, 118,361.54 and 49,465.76

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Solution

The fourth proportional to 85,762.88, 118,361.54 and 49,465.76 is: 68,267.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,762.88 : 118,361.54 = 49,465.76 : x
  2. Step 2: Convert to fraction form
    85,762.88/118,361.54 = 49,465.76/x
  3. Step 3: Cross multiply
    85,762.88x = 118,361.54 × 49,465.76
  4. Step 4: Simplify right side
    85,762.88x = 5,854,843,530.87
  5. Step 5: Solve for x
    x = 5,854,843,530.87/85,762.88
  6. Step 6: Final answer
    x = 68,267.80

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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.