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Finding the Fourth Proportional to 404,643.80, 607,038.60 and 168,010.40

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Solution

The fourth proportional to 404,643.80, 607,038.60 and 168,010.40 is: 252,045.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,643.80 : 607,038.60 = 168,010.40 : x
  2. Step 2: Convert to fraction form
    404,643.80/607,038.60 = 168,010.40/x
  3. Step 3: Cross multiply
    404,643.80x = 607,038.60 × 168,010.40
  4. Step 4: Simplify right side
    404,643.80x = 101,988,798,001.44
  5. Step 5: Solve for x
    x = 101,988,798,001.44/404,643.80
  6. Step 6: Final answer
    x = 252,045.87

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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.