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Finding the Fourth Proportional to 231,221.28, 346,831.92 and 65,009.28

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Solution

The fourth proportional to 231,221.28, 346,831.92 and 65,009.28 is: 97,513.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,221.28 : 346,831.92 = 65,009.28 : x
  2. Step 2: Convert to fraction form
    231,221.28/346,831.92 = 65,009.28/x
  3. Step 3: Cross multiply
    231,221.28x = 346,831.92 × 65,009.28
  4. Step 4: Simplify right side
    231,221.28x = 22,547,293,400.22
  5. Step 5: Solve for x
    x = 22,547,293,400.22/231,221.28
  6. Step 6: Final answer
    x = 97,513.92

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1.5x scale

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.