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Finding the Fourth Proportional to 316,443.09, 436,689.87 and 171,248.76

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Solution

The fourth proportional to 316,443.09, 436,689.87 and 171,248.76 is: 236,322.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,443.09 : 436,689.87 = 171,248.76 : x
  2. Step 2: Convert to fraction form
    316,443.09/436,689.87 = 171,248.76/x
  3. Step 3: Cross multiply
    316,443.09x = 436,689.87 × 171,248.76
  4. Step 4: Simplify right side
    316,443.09x = 74,782,598,742.06
  5. Step 5: Solve for x
    x = 74,782,598,742.06/316,443.09
  6. Step 6: Final answer
    x = 236,322.43

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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.