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Finding the Fourth Proportional to 170,831.40, 256,247.10 and 163,055.40

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Solution

The fourth proportional to 170,831.40, 256,247.10 and 163,055.40 is: 244,583.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,831.40 : 256,247.10 = 163,055.40 : x
  2. Step 2: Convert to fraction form
    170,831.40/256,247.10 = 163,055.40/x
  3. Step 3: Cross multiply
    170,831.40x = 256,247.10 × 163,055.40
  4. Step 4: Simplify right side
    170,831.40x = 41,782,473,389.34
  5. Step 5: Solve for x
    x = 41,782,473,389.34/170,831.40
  6. Step 6: Final answer
    x = 244,583.10

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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.