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Finding the Fourth Proportional to 55,491.48, 76,578.48 and 30,341.52

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Solution

The fourth proportional to 55,491.48, 76,578.48 and 30,341.52 is: 41,871.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,491.48 : 76,578.48 = 30,341.52 : x
  2. Step 2: Convert to fraction form
    55,491.48/76,578.48 = 30,341.52/x
  3. Step 3: Cross multiply
    55,491.48x = 76,578.48 × 30,341.52
  4. Step 4: Simplify right side
    55,491.48x = 2,323,507,482.49
  5. Step 5: Solve for x
    x = 2,323,507,482.49/55,491.48
  6. Step 6: Final answer
    x = 41,871.43

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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.