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Finding the Fourth Proportional to 114,031.80, 171,047.70 and 112,087.80

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Solution

The fourth proportional to 114,031.80, 171,047.70 and 112,087.80 is: 168,131.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,031.80 : 171,047.70 = 112,087.80 : x
  2. Step 2: Convert to fraction form
    114,031.80/171,047.70 = 112,087.80/x
  3. Step 3: Cross multiply
    114,031.80x = 171,047.70 × 112,087.80
  4. Step 4: Simplify right side
    114,031.80x = 19,172,360,388.06
  5. Step 5: Solve for x
    x = 19,172,360,388.06/114,031.80
  6. Step 6: Final answer
    x = 168,131.70

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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.