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Finding the Fourth Proportional to 316,926.78, 437,349.06 and 173,684.22

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Solution

The fourth proportional to 316,926.78, 437,349.06 and 173,684.22 is: 239,678.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,926.78 : 437,349.06 = 173,684.22 : x
  2. Step 2: Convert to fraction form
    316,926.78/437,349.06 = 173,684.22/x
  3. Step 3: Cross multiply
    316,926.78x = 437,349.06 × 173,684.22
  4. Step 4: Simplify right side
    316,926.78x = 75,960,630,353.83
  5. Step 5: Solve for x
    x = 75,960,630,353.83/316,926.78
  6. Step 6: Final answer
    x = 239,678.80

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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.