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Finding the Fourth Proportional to 554,831.84, 765,667.66 and 313,165.12

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Solution

The fourth proportional to 554,831.84, 765,667.66 and 313,165.12 is: 432,167.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,831.84 : 765,667.66 = 313,165.12 : x
  2. Step 2: Convert to fraction form
    554,831.84/765,667.66 = 313,165.12/x
  3. Step 3: Cross multiply
    554,831.84x = 765,667.66 × 313,165.12
  4. Step 4: Simplify right side
    554,831.84x = 239,780,404,624.02
  5. Step 5: Solve for x
    x = 239,780,404,624.02/554,831.84
  6. Step 6: Final answer
    x = 432,167.71

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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.