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Finding the Fourth Proportional to 125,190.54, 172,762.74 and 67,831.34

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Solution

The fourth proportional to 125,190.54, 172,762.74 and 67,831.34 is: 93,607.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,190.54 : 172,762.74 = 67,831.34 : x
  2. Step 2: Convert to fraction form
    125,190.54/172,762.74 = 67,831.34/x
  3. Step 3: Cross multiply
    125,190.54x = 172,762.74 × 67,831.34
  4. Step 4: Simplify right side
    125,190.54x = 11,718,728,156.27
  5. Step 5: Solve for x
    x = 11,718,728,156.27/125,190.54
  6. Step 6: Final answer
    x = 93,607.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.