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Finding the Fourth Proportional to 191,787.80, 287,681.70 and 156,795.80

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Solution

The fourth proportional to 191,787.80, 287,681.70 and 156,795.80 is: 235,193.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,787.80 : 287,681.70 = 156,795.80 : x
  2. Step 2: Convert to fraction form
    191,787.80/287,681.70 = 156,795.80/x
  3. Step 3: Cross multiply
    191,787.80x = 287,681.70 × 156,795.80
  4. Step 4: Simplify right side
    191,787.80x = 45,107,282,296.86
  5. Step 5: Solve for x
    x = 45,107,282,296.86/191,787.80
  6. Step 6: Final answer
    x = 235,193.70

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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.