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Finding the Fourth Proportional to 194,783.20, 292,174.80 and 70,079.20

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Solution

The fourth proportional to 194,783.20, 292,174.80 and 70,079.20 is: 105,118.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,783.20 : 292,174.80 = 70,079.20 : x
  2. Step 2: Convert to fraction form
    194,783.20/292,174.80 = 70,079.20/x
  3. Step 3: Cross multiply
    194,783.20x = 292,174.80 × 70,079.20
  4. Step 4: Simplify right side
    194,783.20x = 20,475,376,244.16
  5. Step 5: Solve for x
    x = 20,475,376,244.16/194,783.20
  6. Step 6: Final answer
    x = 105,118.80

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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.