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Finding the Fourth Proportional to 58,719.64, 88,056.90 and 21,268.68

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Solution

The fourth proportional to 58,719.64, 88,056.90 and 21,268.68 is: 31,894.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,719.64 : 88,056.90 = 21,268.68 : x
  2. Step 2: Convert to fraction form
    58,719.64/88,056.90 = 21,268.68/x
  3. Step 3: Cross multiply
    58,719.64x = 88,056.90 × 21,268.68
  4. Step 4: Simplify right side
    58,719.64x = 1,872,854,027.89
  5. Step 5: Solve for x
    x = 1,872,854,027.89/58,719.64
  6. Step 6: Final answer
    x = 31,894.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.