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Finding the Fourth Proportional to 114,515.64, 171,501.96 and 90,746.76

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Solution

The fourth proportional to 114,515.64, 171,501.96 and 90,746.76 is: 135,904.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,515.64 : 171,501.96 = 90,746.76 : x
  2. Step 2: Convert to fraction form
    114,515.64/171,501.96 = 90,746.76/x
  3. Step 3: Cross multiply
    114,515.64x = 171,501.96 × 90,746.76
  4. Step 4: Simplify right side
    114,515.64x = 15,563,247,203.65
  5. Step 5: Solve for x
    x = 15,563,247,203.65/114,515.64
  6. Step 6: Final answer
    x = 135,904.99

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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.