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Finding the Fourth Proportional to 61,313.64, 91,921.58 and 56,393.16

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Solution

The fourth proportional to 61,313.64, 91,921.58 and 56,393.16 is: 84,544.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,313.64 : 91,921.58 = 56,393.16 : x
  2. Step 2: Convert to fraction form
    61,313.64/91,921.58 = 56,393.16/x
  3. Step 3: Cross multiply
    61,313.64x = 91,921.58 × 56,393.16
  4. Step 4: Simplify right side
    61,313.64x = 5,183,748,368.39
  5. Step 5: Solve for x
    x = 5,183,748,368.39/61,313.64
  6. Step 6: Final answer
    x = 84,544.78

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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.