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Finding the Fourth Proportional to 194,784.60, 292,176.90 and 172,477.20

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Solution

The fourth proportional to 194,784.60, 292,176.90 and 172,477.20 is: 258,715.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,784.60 : 292,176.90 = 172,477.20 : x
  2. Step 2: Convert to fraction form
    194,784.60/292,176.90 = 172,477.20/x
  3. Step 3: Cross multiply
    194,784.60x = 292,176.90 × 172,477.20
  4. Step 4: Simplify right side
    194,784.60x = 50,393,853,616.68
  5. Step 5: Solve for x
    x = 50,393,853,616.68/194,784.60
  6. Step 6: Final answer
    x = 258,715.80

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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.