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Finding the Fourth Proportional to 42,993.48, 64,490.99 and 14,914.53

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Solution

The fourth proportional to 42,993.48, 64,490.99 and 14,914.53 is: 22,372.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,993.48 : 64,490.99 = 14,914.53 : x
  2. Step 2: Convert to fraction form
    42,993.48/64,490.99 = 14,914.53/x
  3. Step 3: Cross multiply
    42,993.48x = 64,490.99 × 14,914.53
  4. Step 4: Simplify right side
    42,993.48x = 961,852,730.51
  5. Step 5: Solve for x
    x = 961,852,730.51/42,993.48
  6. Step 6: Final answer
    x = 22,372.06

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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.