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Finding the Fourth Proportional to 56,798.65, 78,336.21 and 54,502.30

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Solution

The fourth proportional to 56,798.65, 78,336.21 and 54,502.30 is: 75,169.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,798.65 : 78,336.21 = 54,502.30 : x
  2. Step 2: Convert to fraction form
    56,798.65/78,336.21 = 54,502.30/x
  3. Step 3: Cross multiply
    56,798.65x = 78,336.21 × 54,502.30
  4. Step 4: Simplify right side
    56,798.65x = 4,269,503,618.28
  5. Step 5: Solve for x
    x = 4,269,503,618.28/56,798.65
  6. Step 6: Final answer
    x = 75,169.10

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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.