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Finding the Fourth Proportional to 316,771.48, 437,145.42 and 173,534.32

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Solution

The fourth proportional to 316,771.48, 437,145.42 and 173,534.32 is: 239,477.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,771.48 : 437,145.42 = 173,534.32 : x
  2. Step 2: Convert to fraction form
    316,771.48/437,145.42 = 173,534.32/x
  3. Step 3: Cross multiply
    316,771.48x = 437,145.42 × 173,534.32
  4. Step 4: Simplify right side
    316,771.48x = 75,859,733,200.81
  5. Step 5: Solve for x
    x = 75,859,733,200.81/316,771.48
  6. Step 6: Final answer
    x = 239,477.79

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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.