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Finding the Fourth Proportional to 614,424.60, 921,636.90 and 171,192.60

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Solution

The fourth proportional to 614,424.60, 921,636.90 and 171,192.60 is: 256,788.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,424.60 : 921,636.90 = 171,192.60 : x
  2. Step 2: Convert to fraction form
    614,424.60/921,636.90 = 171,192.60/x
  3. Step 3: Cross multiply
    614,424.60x = 921,636.90 × 171,192.60
  4. Step 4: Simplify right side
    614,424.60x = 157,777,417,166.94
  5. Step 5: Solve for x
    x = 157,777,417,166.94/614,424.60
  6. Step 6: Final answer
    x = 256,788.90

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Similar ratio
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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.