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Finding the Fourth Proportional to 59,875.66, 89,788.78 and 20,435.95

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Solution

The fourth proportional to 59,875.66, 89,788.78 and 20,435.95 is: 30,645.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,875.66 : 89,788.78 = 20,435.95 : x
  2. Step 2: Convert to fraction form
    59,875.66/89,788.78 = 20,435.95/x
  3. Step 3: Cross multiply
    59,875.66x = 89,788.78 × 20,435.95
  4. Step 4: Simplify right side
    59,875.66x = 1,834,919,018.64
  5. Step 5: Solve for x
    x = 1,834,919,018.64/59,875.66
  6. Step 6: Final answer
    x = 30,645.49

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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.