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Finding the Fourth Proportional to 56,800.64, 85,212.76 and 19,357.76

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Solution

The fourth proportional to 56,800.64, 85,212.76 and 19,357.76 is: 29,040.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,800.64 : 85,212.76 = 19,357.76 : x
  2. Step 2: Convert to fraction form
    56,800.64/85,212.76 = 19,357.76/x
  3. Step 3: Cross multiply
    56,800.64x = 85,212.76 × 19,357.76
  4. Step 4: Simplify right side
    56,800.64x = 1,649,528,157.02
  5. Step 5: Solve for x
    x = 1,649,528,157.02/56,800.64
  6. Step 6: Final answer
    x = 29,040.66

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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.