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Finding the Fourth Proportional to 46,642.56, 69,690.88 and 45,009.28

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Solution

The fourth proportional to 46,642.56, 69,690.88 and 45,009.28 is: 67,250.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,642.56 : 69,690.88 = 45,009.28 : x
  2. Step 2: Convert to fraction form
    46,642.56/69,690.88 = 45,009.28/x
  3. Step 3: Cross multiply
    46,642.56x = 69,690.88 × 45,009.28
  4. Step 4: Simplify right side
    46,642.56x = 3,136,736,331.37
  5. Step 5: Solve for x
    x = 3,136,736,331.37/46,642.56
  6. Step 6: Final answer
    x = 67,250.52

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.