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Finding the Fourth Proportional to 575,478.72, 794,143.53 and 317,355.66

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Solution

The fourth proportional to 575,478.72, 794,143.53 and 317,355.66 is: 437,941.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,478.72 : 794,143.53 = 317,355.66 : x
  2. Step 2: Convert to fraction form
    575,478.72/794,143.53 = 317,355.66/x
  3. Step 3: Cross multiply
    575,478.72x = 794,143.53 × 317,355.66
  4. Step 4: Simplify right side
    575,478.72x = 252,025,944,097.88
  5. Step 5: Solve for x
    x = 252,025,944,097.88/575,478.72
  6. Step 6: Final answer
    x = 437,941.38

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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.