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Finding the Fourth Proportional to 185,643.81, 256,188.75 and 100,760.91

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Solution

The fourth proportional to 185,643.81, 256,188.75 and 100,760.91 is: 139,050.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,643.81 : 256,188.75 = 100,760.91 : x
  2. Step 2: Convert to fraction form
    185,643.81/256,188.75 = 100,760.91/x
  3. Step 3: Cross multiply
    185,643.81x = 256,188.75 × 100,760.91
  4. Step 4: Simplify right side
    185,643.81x = 25,813,811,581.76
  5. Step 5: Solve for x
    x = 25,813,811,581.76/185,643.81
  6. Step 6: Final answer
    x = 139,050.21

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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.