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Finding the Fourth Proportional to 577,648.80, 866,764.80 and 261,904.32

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Solution

The fourth proportional to 577,648.80, 866,764.80 and 261,904.32 is: 392,988.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,648.80 : 866,764.80 = 261,904.32 : x
  2. Step 2: Convert to fraction form
    577,648.80/866,764.80 = 261,904.32/x
  3. Step 3: Cross multiply
    577,648.80x = 866,764.80 × 261,904.32
  4. Step 4: Simplify right side
    577,648.80x = 227,009,445,543.94
  5. Step 5: Solve for x
    x = 227,009,445,543.94/577,648.80
  6. Step 6: Final answer
    x = 392,988.69

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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.