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Finding the Fourth Proportional to 583,090.80, 874,636.20 and 209,065.20

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Solution

The fourth proportional to 583,090.80, 874,636.20 and 209,065.20 is: 313,597.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,090.80 : 874,636.20 = 209,065.20 : x
  2. Step 2: Convert to fraction form
    583,090.80/874,636.20 = 209,065.20/x
  3. Step 3: Cross multiply
    583,090.80x = 874,636.20 × 209,065.20
  4. Step 4: Simplify right side
    583,090.80x = 182,855,992,080.24
  5. Step 5: Solve for x
    x = 182,855,992,080.24/583,090.80
  6. Step 6: Final answer
    x = 313,597.80

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Double scale
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Similar ratio
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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.