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Finding the Fourth Proportional to 529,879.76, 731,227.16 and 288,157.13

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Solution

The fourth proportional to 529,879.76, 731,227.16 and 288,157.13 is: 397,653.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,879.76 : 731,227.16 = 288,157.13 : x
  2. Step 2: Convert to fraction form
    529,879.76/731,227.16 = 288,157.13/x
  3. Step 3: Cross multiply
    529,879.76x = 731,227.16 × 288,157.13
  4. Step 4: Simplify right side
    529,879.76x = 210,708,319,610.01
  5. Step 5: Solve for x
    x = 210,708,319,610.01/529,879.76
  6. Step 6: Final answer
    x = 397,653.08

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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.