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Finding the Fourth Proportional to 171,527.91, 257,218.97 and 70,256.15

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Solution

The fourth proportional to 171,527.91, 257,218.97 and 70,256.15 is: 105,354.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,527.91 : 257,218.97 = 70,256.15 : x
  2. Step 2: Convert to fraction form
    171,527.91/257,218.97 = 70,256.15/x
  3. Step 3: Cross multiply
    171,527.91x = 257,218.97 × 70,256.15
  4. Step 4: Simplify right side
    171,527.91x = 18,071,212,901.79
  5. Step 5: Solve for x
    x = 18,071,212,901.79/171,527.91
  6. Step 6: Final answer
    x = 105,354.36

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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.