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Finding the Fourth Proportional to 573,914.16, 790,198.74 and 487,691.28

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Solution

The fourth proportional to 573,914.16, 790,198.74 and 487,691.28 is: 671,482.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,914.16 : 790,198.74 = 487,691.28 : x
  2. Step 2: Convert to fraction form
    573,914.16/790,198.74 = 487,691.28/x
  3. Step 3: Cross multiply
    573,914.16x = 790,198.74 × 487,691.28
  4. Step 4: Simplify right side
    573,914.16x = 385,373,034,964.99
  5. Step 5: Solve for x
    x = 385,373,034,964.99/573,914.16
  6. Step 6: Final answer
    x = 671,482.01

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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.