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Finding the Fourth Proportional to 190,937.76, 286,296.88 and 78,695.46

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Solution

The fourth proportional to 190,937.76, 286,296.88 and 78,695.46 is: 117,997.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,937.76 : 286,296.88 = 78,695.46 : x
  2. Step 2: Convert to fraction form
    190,937.76/286,296.88 = 78,695.46/x
  3. Step 3: Cross multiply
    190,937.76x = 286,296.88 × 78,695.46
  4. Step 4: Simplify right side
    190,937.76x = 22,530,264,668.16
  5. Step 5: Solve for x
    x = 22,530,264,668.16/190,937.76
  6. Step 6: Final answer
    x = 117,997.95

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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.