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Finding the Fourth Proportional to 185,883.75, 256,518.68 and 105,311.10

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Solution

The fourth proportional to 185,883.75, 256,518.68 and 105,311.10 is: 145,328.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,883.75 : 256,518.68 = 105,311.10 : x
  2. Step 2: Convert to fraction form
    185,883.75/256,518.68 = 105,311.10/x
  3. Step 3: Cross multiply
    185,883.75x = 256,518.68 × 105,311.10
  4. Step 4: Simplify right side
    185,883.75x = 27,014,263,834.79
  5. Step 5: Solve for x
    x = 27,014,263,834.79/185,883.75
  6. Step 6: Final answer
    x = 145,328.81

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1.5x scale

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.