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Finding the Fourth Proportional to 364,391.40, 546,186.15 and 127,612.20

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Solution

The fourth proportional to 364,391.40, 546,186.15 and 127,612.20 is: 191,277.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,391.40 : 546,186.15 = 127,612.20 : x
  2. Step 2: Convert to fraction form
    364,391.40/546,186.15 = 127,612.20/x
  3. Step 3: Cross multiply
    364,391.40x = 546,186.15 × 127,612.20
  4. Step 4: Simplify right side
    364,391.40x = 69,700,016,211.03
  5. Step 5: Solve for x
    x = 69,700,016,211.03/364,391.40
  6. Step 6: Final answer
    x = 191,277.88

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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.