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Finding the Fourth Proportional to 583,887.28, 805,764.09 and 315,615.28

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Solution

The fourth proportional to 583,887.28, 805,764.09 and 315,615.28 is: 435,548.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,887.28 : 805,764.09 = 315,615.28 : x
  2. Step 2: Convert to fraction form
    583,887.28/805,764.09 = 315,615.28/x
  3. Step 3: Cross multiply
    583,887.28x = 805,764.09 × 315,615.28
  4. Step 4: Simplify right side
    583,887.28x = 254,311,458,879.30
  5. Step 5: Solve for x
    x = 254,311,458,879.30/583,887.28
  6. Step 6: Final answer
    x = 435,548.89

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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.