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Finding the Fourth Proportional to 401,279.40, 602,210.70 and 164,791.80

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Solution

The fourth proportional to 401,279.40, 602,210.70 and 164,791.80 is: 247,307.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,279.40 : 602,210.70 = 164,791.80 : x
  2. Step 2: Convert to fraction form
    401,279.40/602,210.70 = 164,791.80/x
  3. Step 3: Cross multiply
    401,279.40x = 602,210.70 × 164,791.80
  4. Step 4: Simplify right side
    401,279.40x = 99,239,385,232.26
  5. Step 5: Solve for x
    x = 99,239,385,232.26/401,279.40
  6. Step 6: Final answer
    x = 247,307.45

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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.