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Finding the Fourth Proportional to 191,008.20, 285,929.10 and 149,017.80

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Solution

The fourth proportional to 191,008.20, 285,929.10 and 149,017.80 is: 223,071.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,008.20 : 285,929.10 = 149,017.80 : x
  2. Step 2: Convert to fraction form
    191,008.20/285,929.10 = 149,017.80/x
  3. Step 3: Cross multiply
    191,008.20x = 285,929.10 × 149,017.80
  4. Step 4: Simplify right side
    191,008.20x = 42,608,525,437.98
  5. Step 5: Solve for x
    x = 42,608,525,437.98/191,008.20
  6. Step 6: Final answer
    x = 223,071.71

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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.