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Finding the Fourth Proportional to 191,434.59, 287,151.86 and 51,189.57

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Solution

The fourth proportional to 191,434.59, 287,151.86 and 51,189.57 is: 76,784.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,434.59 : 287,151.86 = 51,189.57 : x
  2. Step 2: Convert to fraction form
    191,434.59/287,151.86 = 51,189.57/x
  3. Step 3: Cross multiply
    191,434.59x = 287,151.86 × 51,189.57
  4. Step 4: Simplify right side
    191,434.59x = 14,699,178,674.37
  5. Step 5: Solve for x
    x = 14,699,178,674.37/191,434.59
  6. Step 6: Final answer
    x = 76,784.34

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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.