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Finding the Fourth Proportional to 134,609.40, 201,897.90 and 55,715.40

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Solution

The fourth proportional to 134,609.40, 201,897.90 and 55,715.40 is: 83,566.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,609.40 : 201,897.90 = 55,715.40 : x
  2. Step 2: Convert to fraction form
    134,609.40/201,897.90 = 55,715.40/x
  3. Step 3: Cross multiply
    134,609.40x = 201,897.90 × 55,715.40
  4. Step 4: Simplify right side
    134,609.40x = 11,248,822,257.66
  5. Step 5: Solve for x
    x = 11,248,822,257.66/134,609.40
  6. Step 6: Final answer
    x = 83,566.39

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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.