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Finding the Fourth Proportional to 575,428.74, 794,138.93 and 317,356.16

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Solution

The fourth proportional to 575,428.74, 794,138.93 and 317,356.16 is: 437,977.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,428.74 : 794,138.93 = 317,356.16 : x
  2. Step 2: Convert to fraction form
    575,428.74/794,138.93 = 317,356.16/x
  3. Step 3: Cross multiply
    575,428.74x = 794,138.93 × 317,356.16
  4. Step 4: Simplify right side
    575,428.74x = 252,024,875,773.83
  5. Step 5: Solve for x
    x = 252,024,875,773.83/575,428.74
  6. Step 6: Final answer
    x = 437,977.56

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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.