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Finding the Fourth Proportional to 316,862.52, 437,228.70 and 189,491.64

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Solution

The fourth proportional to 316,862.52, 437,228.70 and 189,491.64 is: 261,473.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,862.52 : 437,228.70 = 189,491.64 : x
  2. Step 2: Convert to fraction form
    316,862.52/437,228.70 = 189,491.64/x
  3. Step 3: Cross multiply
    316,862.52x = 437,228.70 × 189,491.64
  4. Step 4: Simplify right side
    316,862.52x = 82,851,183,418.07
  5. Step 5: Solve for x
    x = 82,851,183,418.07/316,862.52
  6. Step 6: Final answer
    x = 261,473.60

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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.