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Finding the Fourth Proportional to 225,782.55, 338,630.65 and 113,431.63

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Solution

The fourth proportional to 225,782.55, 338,630.65 and 113,431.63 is: 170,125.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,782.55 : 338,630.65 = 113,431.63 : x
  2. Step 2: Convert to fraction form
    225,782.55/338,630.65 = 113,431.63/x
  3. Step 3: Cross multiply
    225,782.55x = 338,630.65 × 113,431.63
  4. Step 4: Simplify right side
    225,782.55x = 38,411,426,597.46
  5. Step 5: Solve for x
    x = 38,411,426,597.46/225,782.55
  6. Step 6: Final answer
    x = 170,125.75

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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.