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Finding the Fourth Proportional to 316,893.25, 437,312.69 and 173,658.93

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Solution

The fourth proportional to 316,893.25, 437,312.69 and 173,658.93 is: 239,649.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,893.25 : 437,312.69 = 173,658.93 : x
  2. Step 2: Convert to fraction form
    316,893.25/437,312.69 = 173,658.93/x
  3. Step 3: Cross multiply
    316,893.25x = 437,312.69 × 173,658.93
  4. Step 4: Simplify right side
    316,893.25x = 75,943,253,820.82
  5. Step 5: Solve for x
    x = 75,943,253,820.82/316,893.25
  6. Step 6: Final answer
    x = 239,649.33

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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.