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Finding the Fourth Proportional to 201,386.70, 277,844.43 and 124,878.30

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Solution

The fourth proportional to 201,386.70, 277,844.43 and 124,878.30 is: 172,289.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,386.70 : 277,844.43 = 124,878.30 : x
  2. Step 2: Convert to fraction form
    201,386.70/277,844.43 = 124,878.30/x
  3. Step 3: Cross multiply
    201,386.70x = 277,844.43 × 124,878.30
  4. Step 4: Simplify right side
    201,386.70x = 34,696,740,082.87
  5. Step 5: Solve for x
    x = 34,696,740,082.87/201,386.70
  6. Step 6: Final answer
    x = 172,289.13

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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.