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Finding the Fourth Proportional to 540,638.80, 811,291.73 and 274,590.25

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Solution

The fourth proportional to 540,638.80, 811,291.73 and 274,590.25 is: 412,054.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,638.80 : 811,291.73 = 274,590.25 : x
  2. Step 2: Convert to fraction form
    540,638.80/811,291.73 = 274,590.25/x
  3. Step 3: Cross multiply
    540,638.80x = 811,291.73 × 274,590.25
  4. Step 4: Simplify right side
    540,638.80x = 222,772,798,963.63
  5. Step 5: Solve for x
    x = 222,772,798,963.63/540,638.80
  6. Step 6: Final answer
    x = 412,054.77

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1.5x scale

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.