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Finding the Fourth Proportional to 316,348.71, 436,561.21 and 173,108.77

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Solution

The fourth proportional to 316,348.71, 436,561.21 and 173,108.77 is: 238,890.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,348.71 : 436,561.21 = 173,108.77 : x
  2. Step 2: Convert to fraction form
    316,348.71/436,561.21 = 173,108.77/x
  3. Step 3: Cross multiply
    316,348.71x = 436,561.21 × 173,108.77
  4. Step 4: Simplify right side
    316,348.71x = 75,572,573,217.79
  5. Step 5: Solve for x
    x = 75,572,573,217.79/316,348.71
  6. Step 6: Final answer
    x = 238,890.09

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Double scale
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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.