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Finding the Fourth Proportional to 354,019.10, 531,028.65 and 164,479.10

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Solution

The fourth proportional to 354,019.10, 531,028.65 and 164,479.10 is: 246,718.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,019.10 : 531,028.65 = 164,479.10 : x
  2. Step 2: Convert to fraction form
    354,019.10/531,028.65 = 164,479.10/x
  3. Step 3: Cross multiply
    354,019.10x = 531,028.65 × 164,479.10
  4. Step 4: Simplify right side
    354,019.10x = 87,343,114,426.22
  5. Step 5: Solve for x
    x = 87,343,114,426.22/354,019.10
  6. Step 6: Final answer
    x = 246,718.65

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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.