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Finding the Fourth Proportional to 192,999.30, 266,338.98 and 105,783.90

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Solution

The fourth proportional to 192,999.30, 266,338.98 and 105,783.90 is: 145,981.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,999.30 : 266,338.98 = 105,783.90 : x
  2. Step 2: Convert to fraction form
    192,999.30/266,338.98 = 105,783.90/x
  3. Step 3: Cross multiply
    192,999.30x = 266,338.98 × 105,783.90
  4. Step 4: Simplify right side
    192,999.30x = 28,174,376,026.42
  5. Step 5: Solve for x
    x = 28,174,376,026.42/192,999.30
  6. Step 6: Final answer
    x = 145,981.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.