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Finding the Fourth Proportional to 438,174.92, 604,782.29 and 256,945.23

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Solution

The fourth proportional to 438,174.92, 604,782.29 and 256,945.23 is: 354,643.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,174.92 : 604,782.29 = 256,945.23 : x
  2. Step 2: Convert to fraction form
    438,174.92/604,782.29 = 256,945.23/x
  3. Step 3: Cross multiply
    438,174.92x = 604,782.29 × 256,945.23
  4. Step 4: Simplify right side
    438,174.92x = 155,395,923,319.25
  5. Step 5: Solve for x
    x = 155,395,923,319.25/438,174.92
  6. Step 6: Final answer
    x = 354,643.59

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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.