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Finding the Fourth Proportional to 272,417.84, 375,939.96 and 153,185.84

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Solution

The fourth proportional to 272,417.84, 375,939.96 and 153,185.84 is: 211,398.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,417.84 : 375,939.96 = 153,185.84 : x
  2. Step 2: Convert to fraction form
    272,417.84/375,939.96 = 153,185.84/x
  3. Step 3: Cross multiply
    272,417.84x = 375,939.96 × 153,185.84
  4. Step 4: Simplify right side
    272,417.84x = 57,588,678,562.17
  5. Step 5: Solve for x
    x = 57,588,678,562.17/272,417.84
  6. Step 6: Final answer
    x = 211,398.34

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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.