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Finding the Fourth Proportional to 535,478.40, 802,791.36 and 265,416.48

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Solution

The fourth proportional to 535,478.40, 802,791.36 and 265,416.48 is: 397,913.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,478.40 : 802,791.36 = 265,416.48 : x
  2. Step 2: Convert to fraction form
    535,478.40/802,791.36 = 265,416.48/x
  3. Step 3: Cross multiply
    535,478.40x = 802,791.36 × 265,416.48
  4. Step 4: Simplify right side
    535,478.40x = 213,074,056,945.61
  5. Step 5: Solve for x
    x = 213,074,056,945.61/535,478.40
  6. Step 6: Final answer
    x = 397,913.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.