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Finding the Fourth Proportional to 55,831.68, 83,488.32 and 43,208.64

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Solution

The fourth proportional to 55,831.68, 83,488.32 and 43,208.64 is: 64,612.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,831.68 : 83,488.32 = 43,208.64 : x
  2. Step 2: Convert to fraction form
    55,831.68/83,488.32 = 43,208.64/x
  3. Step 3: Cross multiply
    55,831.68x = 83,488.32 × 43,208.64
  4. Step 4: Simplify right side
    55,831.68x = 3,607,416,763.08
  5. Step 5: Solve for x
    x = 3,607,416,763.08/55,831.68
  6. Step 6: Final answer
    x = 64,612.36

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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.