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Finding the Fourth Proportional to 191,710.70, 287,566.05 and 120,851.90

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Solution

The fourth proportional to 191,710.70, 287,566.05 and 120,851.90 is: 181,277.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,710.70 : 287,566.05 = 120,851.90 : x
  2. Step 2: Convert to fraction form
    191,710.70/287,566.05 = 120,851.90/x
  3. Step 3: Cross multiply
    191,710.70x = 287,566.05 × 120,851.90
  4. Step 4: Simplify right side
    191,710.70x = 34,752,903,518.00
  5. Step 5: Solve for x
    x = 34,752,903,518.00/191,710.70
  6. Step 6: Final answer
    x = 181,277.85

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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.