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Finding the Fourth Proportional to 183,431.60, 256,979.20 and 183,431.60

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Solution

The fourth proportional to 183,431.60, 256,979.20 and 183,431.60 is: 256,979.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,431.60 : 256,979.20 = 183,431.60 : x
  2. Step 2: Convert to fraction form
    183,431.60/256,979.20 = 183,431.60/x
  3. Step 3: Cross multiply
    183,431.60x = 256,979.20 × 183,431.60
  4. Step 4: Simplify right side
    183,431.60x = 47,138,105,822.72
  5. Step 5: Solve for x
    x = 47,138,105,822.72/183,431.60
  6. Step 6: Final answer
    x = 256,979.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.