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Finding the Fourth Proportional to 583,679.80, 805,879.02 and 440,601.40

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Solution

The fourth proportional to 583,679.80, 805,879.02 and 440,601.40 is: 608,332.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,679.80 : 805,879.02 = 440,601.40 : x
  2. Step 2: Convert to fraction form
    583,679.80/805,879.02 = 440,601.40/x
  3. Step 3: Cross multiply
    583,679.80x = 805,879.02 × 440,601.40
  4. Step 4: Simplify right side
    583,679.80x = 355,071,424,442.63
  5. Step 5: Solve for x
    x = 355,071,424,442.63/583,679.80
  6. Step 6: Final answer
    x = 608,332.56

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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.