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Finding the Fourth Proportional to 459,428.60, 689,175.74 and 122,467.52

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Solution

The fourth proportional to 459,428.60, 689,175.74 and 122,467.52 is: 183,710.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,428.60 : 689,175.74 = 122,467.52 : x
  2. Step 2: Convert to fraction form
    459,428.60/689,175.74 = 122,467.52/x
  3. Step 3: Cross multiply
    459,428.60x = 689,175.74 × 122,467.52
  4. Step 4: Simplify right side
    459,428.60x = 84,401,643,721.96
  5. Step 5: Solve for x
    x = 84,401,643,721.96/459,428.60
  6. Step 6: Final answer
    x = 183,710.03

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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.