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Finding the Fourth Proportional to 476,645.40, 657,774.54 and 261,788.04

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Solution

The fourth proportional to 476,645.40, 657,774.54 and 261,788.04 is: 361,269.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,645.40 : 657,774.54 = 261,788.04 : x
  2. Step 2: Convert to fraction form
    476,645.40/657,774.54 = 261,788.04/x
  3. Step 3: Cross multiply
    476,645.40x = 657,774.54 × 261,788.04
  4. Step 4: Simplify right side
    476,645.40x = 172,197,507,588.50
  5. Step 5: Solve for x
    x = 172,197,507,588.50/476,645.40
  6. Step 6: Final answer
    x = 361,269.63

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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.