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Finding the Fourth Proportional to 185,825.72, 256,435.80 and 100,943.40

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Solution

The fourth proportional to 185,825.72, 256,435.80 and 100,943.40 is: 139,299.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,825.72 : 256,435.80 = 100,943.40 : x
  2. Step 2: Convert to fraction form
    185,825.72/256,435.80 = 100,943.40/x
  3. Step 3: Cross multiply
    185,825.72x = 256,435.80 × 100,943.40
  4. Step 4: Simplify right side
    185,825.72x = 25,885,501,533.72
  5. Step 5: Solve for x
    x = 25,885,501,533.72/185,825.72
  6. Step 6: Final answer
    x = 139,299.89

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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.