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Finding the Fourth Proportional to 641,859.76, 885,775.80 and 369,777.52

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Solution

The fourth proportional to 641,859.76, 885,775.80 and 369,777.52 is: 510,298.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,859.76 : 885,775.80 = 369,777.52 : x
  2. Step 2: Convert to fraction form
    641,859.76/885,775.80 = 369,777.52/x
  3. Step 3: Cross multiply
    641,859.76x = 885,775.80 × 369,777.52
  4. Step 4: Simplify right side
    641,859.76x = 327,539,978,600.02
  5. Step 5: Solve for x
    x = 327,539,978,600.02/641,859.76
  6. Step 6: Final answer
    x = 510,298.35

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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.