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Finding the Fourth Proportional to 478,624.01, 718,060.55 and 179,128.13

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Solution

The fourth proportional to 478,624.01, 718,060.55 and 179,128.13 is: 268,738.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,624.01 : 718,060.55 = 179,128.13 : x
  2. Step 2: Convert to fraction form
    478,624.01/718,060.55 = 179,128.13/x
  3. Step 3: Cross multiply
    478,624.01x = 718,060.55 × 179,128.13
  4. Step 4: Simplify right side
    478,624.01x = 128,624,839,062.33
  5. Step 5: Solve for x
    x = 128,624,839,062.33/478,624.01
  6. Step 6: Final answer
    x = 268,738.80

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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.