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Finding the Fourth Proportional to 316,501.87, 436,782.90 and 173,261.92

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Solution

The fourth proportional to 316,501.87, 436,782.90 and 173,261.92 is: 239,107.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,501.87 : 436,782.90 = 173,261.92 : x
  2. Step 2: Convert to fraction form
    316,501.87/436,782.90 = 173,261.92/x
  3. Step 3: Cross multiply
    316,501.87x = 436,782.90 × 173,261.92
  4. Step 4: Simplify right side
    316,501.87x = 75,677,843,877.17
  5. Step 5: Solve for x
    x = 75,677,843,877.17/316,501.87
  6. Step 6: Final answer
    x = 239,107.10

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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.