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Finding the Fourth Proportional to 85,812, 128,567.88 and 59,533.44

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Solution

The fourth proportional to 85,812, 128,567.88 and 59,533.44 is: 89,196.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,812 : 128,567.88 = 59,533.44 : x
  2. Step 2: Convert to fraction form
    85,812/128,567.88 = 59,533.44/x
  3. Step 3: Cross multiply
    85,812x = 128,567.88 × 59,533.44
  4. Step 4: Simplify right side
    85,812x = 7,654,088,169.91
  5. Step 5: Solve for x
    x = 7,654,088,169.91/85,812
  6. Step 6: Final answer
    x = 89,196.01

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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.