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Finding the Fourth Proportional to 127,274.76, 189,981.72 and 118,023.48

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Solution

The fourth proportional to 127,274.76, 189,981.72 and 118,023.48 is: 176,172.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,274.76 : 189,981.72 = 118,023.48 : x
  2. Step 2: Convert to fraction form
    127,274.76/189,981.72 = 118,023.48/x
  3. Step 3: Cross multiply
    127,274.76x = 189,981.72 × 118,023.48
  4. Step 4: Simplify right side
    127,274.76x = 22,422,303,730.79
  5. Step 5: Solve for x
    x = 22,422,303,730.79/127,274.76
  6. Step 6: Final answer
    x = 176,172.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.