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Finding the Fourth Proportional to 191,423.20, 287,005.20 and 101,480.80

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Solution

The fourth proportional to 191,423.20, 287,005.20 and 101,480.80 is: 152,152.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,423.20 : 287,005.20 = 101,480.80 : x
  2. Step 2: Convert to fraction form
    191,423.20/287,005.20 = 101,480.80/x
  3. Step 3: Cross multiply
    191,423.20x = 287,005.20 × 101,480.80
  4. Step 4: Simplify right side
    191,423.20x = 29,125,517,300.16
  5. Step 5: Solve for x
    x = 29,125,517,300.16/191,423.20
  6. Step 6: Final answer
    x = 152,152.49

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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.