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Finding the Fourth Proportional to 342,141.40, 513,212.10 and 92,823.40

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Solution

The fourth proportional to 342,141.40, 513,212.10 and 92,823.40 is: 139,235.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,141.40 : 513,212.10 = 92,823.40 : x
  2. Step 2: Convert to fraction form
    342,141.40/513,212.10 = 92,823.40/x
  3. Step 3: Cross multiply
    342,141.40x = 513,212.10 × 92,823.40
  4. Step 4: Simplify right side
    342,141.40x = 47,638,092,043.14
  5. Step 5: Solve for x
    x = 47,638,092,043.14/342,141.40
  6. Step 6: Final answer
    x = 139,235.10

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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.