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Finding the Fourth Proportional to 191,712.48, 264,564.96 and 105,674.58

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Solution

The fourth proportional to 191,712.48, 264,564.96 and 105,674.58 is: 145,831.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,712.48 : 264,564.96 = 105,674.58 : x
  2. Step 2: Convert to fraction form
    191,712.48/264,564.96 = 105,674.58/x
  3. Step 3: Cross multiply
    191,712.48x = 264,564.96 × 105,674.58
  4. Step 4: Simplify right side
    191,712.48x = 27,957,791,030.72
  5. Step 5: Solve for x
    x = 27,957,791,030.72/191,712.48
  6. Step 6: Final answer
    x = 145,831.88

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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.