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Finding the Fourth Proportional to 440,820.09, 608,157.18 and 287,809.47

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Solution

The fourth proportional to 440,820.09, 608,157.18 and 287,809.47 is: 397,063.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,820.09 : 608,157.18 = 287,809.47 : x
  2. Step 2: Convert to fraction form
    440,820.09/608,157.18 = 287,809.47/x
  3. Step 3: Cross multiply
    440,820.09x = 608,157.18 × 287,809.47
  4. Step 4: Simplify right side
    440,820.09x = 175,033,395,652.50
  5. Step 5: Solve for x
    x = 175,033,395,652.50/440,820.09
  6. Step 6: Final answer
    x = 397,063.11

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1.5x scale

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.