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Finding the Fourth Proportional to 101,376.04, 139,894.62 and 58,931.32

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Solution

The fourth proportional to 101,376.04, 139,894.62 and 58,931.32 is: 81,322.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,376.04 : 139,894.62 = 58,931.32 : x
  2. Step 2: Convert to fraction form
    101,376.04/139,894.62 = 58,931.32/x
  3. Step 3: Cross multiply
    101,376.04x = 139,894.62 × 58,931.32
  4. Step 4: Simplify right side
    101,376.04x = 8,244,174,617.50
  5. Step 5: Solve for x
    x = 8,244,174,617.50/101,376.04
  6. Step 6: Final answer
    x = 81,322.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.