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Finding the Fourth Proportional to 389,429.90, 583,707.45 and 164,752.10

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Solution

The fourth proportional to 389,429.90, 583,707.45 and 164,752.10 is: 246,943.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,429.90 : 583,707.45 = 164,752.10 : x
  2. Step 2: Convert to fraction form
    389,429.90/583,707.45 = 164,752.10/x
  3. Step 3: Cross multiply
    389,429.90x = 583,707.45 × 164,752.10
  4. Step 4: Simplify right side
    389,429.90x = 96,167,028,173.15
  5. Step 5: Solve for x
    x = 96,167,028,173.15/389,429.90
  6. Step 6: Final answer
    x = 246,943.10

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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.