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Finding the Fourth Proportional to 171,043.40, 256,392.30 and 77,616.20

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Solution

The fourth proportional to 171,043.40, 256,392.30 and 77,616.20 is: 116,345.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,043.40 : 256,392.30 = 77,616.20 : x
  2. Step 2: Convert to fraction form
    171,043.40/256,392.30 = 77,616.20/x
  3. Step 3: Cross multiply
    171,043.40x = 256,392.30 × 77,616.20
  4. Step 4: Simplify right side
    171,043.40x = 19,900,196,035.26
  5. Step 5: Solve for x
    x = 19,900,196,035.26/171,043.40
  6. Step 6: Final answer
    x = 116,345.89

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1.5x scale

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.