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Finding the Fourth Proportional to 191,415.60, 287,123.40 and 161,891.10

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Solution

The fourth proportional to 191,415.60, 287,123.40 and 161,891.10 is: 242,836.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,415.60 : 287,123.40 = 161,891.10 : x
  2. Step 2: Convert to fraction form
    191,415.60/287,123.40 = 161,891.10/x
  3. Step 3: Cross multiply
    191,415.60x = 287,123.40 × 161,891.10
  4. Step 4: Simplify right side
    191,415.60x = 46,482,723,061.74
  5. Step 5: Solve for x
    x = 46,482,723,061.74/191,415.60
  6. Step 6: Final answer
    x = 242,836.65

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1.5x scale

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.