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Finding the Fourth Proportional to 90,598.64, 125,005.95 and 54,787.86

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Solution

The fourth proportional to 90,598.64, 125,005.95 and 54,787.86 is: 75,595.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,598.64 : 125,005.95 = 54,787.86 : x
  2. Step 2: Convert to fraction form
    90,598.64/125,005.95 = 54,787.86/x
  3. Step 3: Cross multiply
    90,598.64x = 125,005.95 × 54,787.86
  4. Step 4: Simplify right side
    90,598.64x = 6,848,808,487.77
  5. Step 5: Solve for x
    x = 6,848,808,487.77/90,598.64
  6. Step 6: Final answer
    x = 75,595.05

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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.