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Finding the Fourth Proportional to 526,825.86, 727,019.64 and 285,108.50

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Solution

The fourth proportional to 526,825.86, 727,019.64 and 285,108.50 is: 393,449.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,825.86 : 727,019.64 = 285,108.50 : x
  2. Step 2: Convert to fraction form
    526,825.86/727,019.64 = 285,108.50/x
  3. Step 3: Cross multiply
    526,825.86x = 727,019.64 × 285,108.50
  4. Step 4: Simplify right side
    526,825.86x = 207,279,479,030.94
  5. Step 5: Solve for x
    x = 207,279,479,030.94/526,825.86
  6. Step 6: Final answer
    x = 393,449.70

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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.