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Finding the Fourth Proportional to 492,730.74, 739,089.62 and 118,750.50

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Solution

The fourth proportional to 492,730.74, 739,089.62 and 118,750.50 is: 178,124.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,730.74 : 739,089.62 = 118,750.50 : x
  2. Step 2: Convert to fraction form
    492,730.74/739,089.62 = 118,750.50/x
  3. Step 3: Cross multiply
    492,730.74x = 739,089.62 × 118,750.50
  4. Step 4: Simplify right side
    492,730.74x = 87,767,261,919.81
  5. Step 5: Solve for x
    x = 87,767,261,919.81/492,730.74
  6. Step 6: Final answer
    x = 178,124.19

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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.