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Finding the Fourth Proportional to 251,061.42, 346,530.51 and 155,513.82

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Solution

The fourth proportional to 251,061.42, 346,530.51 and 155,513.82 is: 214,649.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,061.42 : 346,530.51 = 155,513.82 : x
  2. Step 2: Convert to fraction form
    251,061.42/346,530.51 = 155,513.82/x
  3. Step 3: Cross multiply
    251,061.42x = 346,530.51 × 155,513.82
  4. Step 4: Simplify right side
    251,061.42x = 53,890,283,356.65
  5. Step 5: Solve for x
    x = 53,890,283,356.65/251,061.42
  6. Step 6: Final answer
    x = 214,649.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.