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Finding the Fourth Proportional to 354,783.15, 532,010.70 and 155,000.70

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Solution

The fourth proportional to 354,783.15, 532,010.70 and 155,000.70 is: 232,429.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,783.15 : 532,010.70 = 155,000.70 : x
  2. Step 2: Convert to fraction form
    354,783.15/532,010.70 = 155,000.70/x
  3. Step 3: Cross multiply
    354,783.15x = 532,010.70 × 155,000.70
  4. Step 4: Simplify right side
    354,783.15x = 82,462,030,907.49
  5. Step 5: Solve for x
    x = 82,462,030,907.49/354,783.15
  6. Step 6: Final answer
    x = 232,429.39

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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.