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Finding the Fourth Proportional to 401,477.80, 602,216.70 and 164,990.20

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Solution

The fourth proportional to 401,477.80, 602,216.70 and 164,990.20 is: 247,485.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,477.80 : 602,216.70 = 164,990.20 : x
  2. Step 2: Convert to fraction form
    401,477.80/602,216.70 = 164,990.20/x
  3. Step 3: Cross multiply
    401,477.80x = 602,216.70 × 164,990.20
  4. Step 4: Simplify right side
    401,477.80x = 99,359,853,776.34
  5. Step 5: Solve for x
    x = 99,359,853,776.34/401,477.80
  6. Step 6: Final answer
    x = 247,485.30

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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.