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Finding the Fourth Proportional to 342,043.70, 513,065.55 and 92,725.70

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Solution

The fourth proportional to 342,043.70, 513,065.55 and 92,725.70 is: 139,088.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,043.70 : 513,065.55 = 92,725.70 : x
  2. Step 2: Convert to fraction form
    342,043.70/513,065.55 = 92,725.70/x
  3. Step 3: Cross multiply
    342,043.70x = 513,065.55 × 92,725.70
  4. Step 4: Simplify right side
    342,043.70x = 47,574,362,269.64
  5. Step 5: Solve for x
    x = 47,574,362,269.64/342,043.70
  6. Step 6: Final answer
    x = 139,088.55

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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.