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Finding the Fourth Proportional to 224,316, 309,562.56 and 123,720.48

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Solution

The fourth proportional to 224,316, 309,562.56 and 123,720.48 is: 170,737.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,316 : 309,562.56 = 123,720.48 : x
  2. Step 2: Convert to fraction form
    224,316/309,562.56 = 123,720.48/x
  3. Step 3: Cross multiply
    224,316x = 309,562.56 × 123,720.48
  4. Step 4: Simplify right side
    224,316x = 38,299,228,513.23
  5. Step 5: Solve for x
    x = 38,299,228,513.23/224,316
  6. Step 6: Final answer
    x = 170,737.84

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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.