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Finding the Fourth Proportional to 191,444.55, 287,166.83 and 66,785.55

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Solution

The fourth proportional to 191,444.55, 287,166.83 and 66,785.55 is: 100,178.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,444.55 : 287,166.83 = 66,785.55 : x
  2. Step 2: Convert to fraction form
    191,444.55/287,166.83 = 66,785.55/x
  3. Step 3: Cross multiply
    191,444.55x = 287,166.83 × 66,785.55
  4. Step 4: Simplify right side
    191,444.55x = 19,178,594,349.38
  5. Step 5: Solve for x
    x = 19,178,594,349.38/191,444.55
  6. Step 6: Final answer
    x = 100,178.33

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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.