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Finding the Fourth Proportional to 79,935.40, 119,672.70 and 48,831.40

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Solution

The fourth proportional to 79,935.40, 119,672.70 and 48,831.40 is: 73,106.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,935.40 : 119,672.70 = 48,831.40 : x
  2. Step 2: Convert to fraction form
    79,935.40/119,672.70 = 48,831.40/x
  3. Step 3: Cross multiply
    79,935.40x = 119,672.70 × 48,831.40
  4. Step 4: Simplify right side
    79,935.40x = 5,843,785,482.78
  5. Step 5: Solve for x
    x = 5,843,785,482.78/79,935.40
  6. Step 6: Final answer
    x = 73,106.35

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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.