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Finding the Fourth Proportional to 529,444.88, 730,638.56 and 287,727.43

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Solution

The fourth proportional to 529,444.88, 730,638.56 and 287,727.43 is: 397,066.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,444.88 : 730,638.56 = 287,727.43 : x
  2. Step 2: Convert to fraction form
    529,444.88/730,638.56 = 287,727.43/x
  3. Step 3: Cross multiply
    529,444.88x = 730,638.56 × 287,727.43
  4. Step 4: Simplify right side
    529,444.88x = 210,224,753,689.06
  5. Step 5: Solve for x
    x = 210,224,753,689.06/529,444.88
  6. Step 6: Final answer
    x = 397,066.36

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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.