Home / 191,617.50-287,549.27-128,508.90

Finding the Fourth Proportional to 191,617.50, 287,549.27 and 128,508.90

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Solution

The fourth proportional to 191,617.50, 287,549.27 and 128,508.90 is: 192,845.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,617.50 : 287,549.27 = 128,508.90 : x
  2. Step 2: Convert to fraction form
    191,617.50/287,549.27 = 128,508.90/x
  3. Step 3: Cross multiply
    191,617.50x = 287,549.27 × 128,508.90
  4. Step 4: Simplify right side
    191,617.50x = 36,952,640,383.50
  5. Step 5: Solve for x
    x = 36,952,640,383.50/191,617.50
  6. Step 6: Final answer
    x = 192,845.85

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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.