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Finding the Fourth Proportional to 272,143.60, 408,118.20 and 94,656.40

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Solution

The fourth proportional to 272,143.60, 408,118.20 and 94,656.40 is: 141,950.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,143.60 : 408,118.20 = 94,656.40 : x
  2. Step 2: Convert to fraction form
    272,143.60/408,118.20 = 94,656.40/x
  3. Step 3: Cross multiply
    272,143.60x = 408,118.20 × 94,656.40
  4. Step 4: Simplify right side
    272,143.60x = 38,630,999,586.48
  5. Step 5: Solve for x
    x = 38,630,999,586.48/272,143.60
  6. Step 6: Final answer
    x = 141,950.79

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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.