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Finding the Fourth Proportional to 484,428.60, 726,858.90 and 169,111.80

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Solution

The fourth proportional to 484,428.60, 726,858.90 and 169,111.80 is: 253,743.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,428.60 : 726,858.90 = 169,111.80 : x
  2. Step 2: Convert to fraction form
    484,428.60/726,858.90 = 169,111.80/x
  3. Step 3: Cross multiply
    484,428.60x = 726,858.90 × 169,111.80
  4. Step 4: Simplify right side
    484,428.60x = 122,920,416,925.02
  5. Step 5: Solve for x
    x = 122,920,416,925.02/484,428.60
  6. Step 6: Final answer
    x = 253,743.10

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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.