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Finding the Fourth Proportional to 133,617.64, 184,303.74 and 85,931.32

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Solution

The fourth proportional to 133,617.64, 184,303.74 and 85,931.32 is: 118,528.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,617.64 : 184,303.74 = 85,931.32 : x
  2. Step 2: Convert to fraction form
    133,617.64/184,303.74 = 85,931.32/x
  3. Step 3: Cross multiply
    133,617.64x = 184,303.74 × 85,931.32
  4. Step 4: Simplify right side
    133,617.64x = 15,837,463,659.14
  5. Step 5: Solve for x
    x = 15,837,463,659.14/133,617.64
  6. Step 6: Final answer
    x = 118,528.24

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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.