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Finding the Fourth Proportional to 171,567.40, 257,642.70 and 127,244.20

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Solution

The fourth proportional to 171,567.40, 257,642.70 and 127,244.20 is: 191,082.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,567.40 : 257,642.70 = 127,244.20 : x
  2. Step 2: Convert to fraction form
    171,567.40/257,642.70 = 127,244.20/x
  3. Step 3: Cross multiply
    171,567.40x = 257,642.70 × 127,244.20
  4. Step 4: Simplify right side
    171,567.40x = 32,783,539,247.34
  5. Step 5: Solve for x
    x = 32,783,539,247.34/171,567.40
  6. Step 6: Final answer
    x = 191,082.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.