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Finding the Fourth Proportional to 70,892.37, 97,831.80 and 39,061.26

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Solution

The fourth proportional to 70,892.37, 97,831.80 and 39,061.26 is: 53,904.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,892.37 : 97,831.80 = 39,061.26 : x
  2. Step 2: Convert to fraction form
    70,892.37/97,831.80 = 39,061.26/x
  3. Step 3: Cross multiply
    70,892.37x = 97,831.80 × 39,061.26
  4. Step 4: Simplify right side
    70,892.37x = 3,821,433,376.07
  5. Step 5: Solve for x
    x = 3,821,433,376.07/70,892.37
  6. Step 6: Final answer
    x = 53,904.72

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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.