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Finding the Fourth Proportional to 56,512.80, 84,769.20 and 46,663.20

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Solution

The fourth proportional to 56,512.80, 84,769.20 and 46,663.20 is: 69,994.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,512.80 : 84,769.20 = 46,663.20 : x
  2. Step 2: Convert to fraction form
    56,512.80/84,769.20 = 46,663.20/x
  3. Step 3: Cross multiply
    56,512.80x = 84,769.20 × 46,663.20
  4. Step 4: Simplify right side
    56,512.80x = 3,955,602,133.44
  5. Step 5: Solve for x
    x = 3,955,602,133.44/56,512.80
  6. Step 6: Final answer
    x = 69,994.80

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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.