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Finding the Fourth Proportional to 61,213.16, 91,693.38 and 56,784.08

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Solution

The fourth proportional to 61,213.16, 91,693.38 and 56,784.08 is: 85,058.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,213.16 : 91,693.38 = 56,784.08 : x
  2. Step 2: Convert to fraction form
    61,213.16/91,693.38 = 56,784.08/x
  3. Step 3: Cross multiply
    61,213.16x = 91,693.38 × 56,784.08
  4. Step 4: Simplify right side
    61,213.16x = 5,206,724,225.39
  5. Step 5: Solve for x
    x = 5,206,724,225.39/61,213.16
  6. Step 6: Final answer
    x = 85,058.90

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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.