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Finding the Fourth Proportional to 172,058.60, 257,358.90 and 154,416.80

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Solution

The fourth proportional to 172,058.60, 257,358.90 and 154,416.80 is: 230,970.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,058.60 : 257,358.90 = 154,416.80 : x
  2. Step 2: Convert to fraction form
    172,058.60/257,358.90 = 154,416.80/x
  3. Step 3: Cross multiply
    172,058.60x = 257,358.90 × 154,416.80
  4. Step 4: Simplify right side
    172,058.60x = 39,740,537,789.52
  5. Step 5: Solve for x
    x = 39,740,537,789.52/172,058.60
  6. Step 6: Final answer
    x = 230,970.95

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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.