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Finding the Fourth Proportional to 64,776.42, 89,393.22 and 36,483.12

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Solution

The fourth proportional to 64,776.42, 89,393.22 and 36,483.12 is: 50,347.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,776.42 : 89,393.22 = 36,483.12 : x
  2. Step 2: Convert to fraction form
    64,776.42/89,393.22 = 36,483.12/x
  3. Step 3: Cross multiply
    64,776.42x = 89,393.22 × 36,483.12
  4. Step 4: Simplify right side
    64,776.42x = 3,261,343,572.45
  5. Step 5: Solve for x
    x = 3,261,343,572.45/64,776.42
  6. Step 6: Final answer
    x = 50,347.70

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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.