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Finding the Fourth Proportional to 85,874.42, 118,482.48 and 55,661.02

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Solution

The fourth proportional to 85,874.42, 118,482.48 and 55,661.02 is: 76,796.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,874.42 : 118,482.48 = 55,661.02 : x
  2. Step 2: Convert to fraction form
    85,874.42/118,482.48 = 55,661.02/x
  3. Step 3: Cross multiply
    85,874.42x = 118,482.48 × 55,661.02
  4. Step 4: Simplify right side
    85,874.42x = 6,594,855,688.93
  5. Step 5: Solve for x
    x = 6,594,855,688.93/85,874.42
  6. Step 6: Final answer
    x = 76,796.51

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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.