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Finding the Fourth Proportional to 575,830.43, 794,643.80 and 317,723.48

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Solution

The fourth proportional to 575,830.43, 794,643.80 and 317,723.48 is: 438,457.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,830.43 : 794,643.80 = 317,723.48 : x
  2. Step 2: Convert to fraction form
    575,830.43/794,643.80 = 317,723.48/x
  3. Step 3: Cross multiply
    575,830.43x = 794,643.80 × 317,723.48
  4. Step 4: Simplify right side
    575,830.43x = 252,476,987,934.59
  5. Step 5: Solve for x
    x = 252,476,987,934.59/575,830.43
  6. Step 6: Final answer
    x = 438,457.19

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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.