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Finding the Fourth Proportional to 60,513.84, 90,741.96 and 21,066.12

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Solution

The fourth proportional to 60,513.84, 90,741.96 and 21,066.12 is: 31,589.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,513.84 : 90,741.96 = 21,066.12 : x
  2. Step 2: Convert to fraction form
    60,513.84/90,741.96 = 21,066.12/x
  3. Step 3: Cross multiply
    60,513.84x = 90,741.96 × 21,066.12
  4. Step 4: Simplify right side
    60,513.84x = 1,911,581,018.40
  5. Step 5: Solve for x
    x = 1,911,581,018.40/60,513.84
  6. Step 6: Final answer
    x = 31,589.15

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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.