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Finding the Fourth Proportional to 58,355.67, 87,544.99 and 20,905.66

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Solution

The fourth proportional to 58,355.67, 87,544.99 and 20,905.66 is: 31,362.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,355.67 : 87,544.99 = 20,905.66 : x
  2. Step 2: Convert to fraction form
    58,355.67/87,544.99 = 20,905.66/x
  3. Step 3: Cross multiply
    58,355.67x = 87,544.99 × 20,905.66
  4. Step 4: Simplify right side
    58,355.67x = 1,830,185,852.81
  5. Step 5: Solve for x
    x = 1,830,185,852.81/58,355.67
  6. Step 6: Final answer
    x = 31,362.60

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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.