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Finding the Fourth Proportional to 201,920.10, 302,877.45 and 61,679.40

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Solution

The fourth proportional to 201,920.10, 302,877.45 and 61,679.40 is: 92,518.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,920.10 : 302,877.45 = 61,679.40 : x
  2. Step 2: Convert to fraction form
    201,920.10/302,877.45 = 61,679.40/x
  3. Step 3: Cross multiply
    201,920.10x = 302,877.45 × 61,679.40
  4. Step 4: Simplify right side
    201,920.10x = 18,681,299,389.53
  5. Step 5: Solve for x
    x = 18,681,299,389.53/201,920.10
  6. Step 6: Final answer
    x = 92,518.28

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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.