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Finding the Fourth Proportional to 105,445.36, 145,510.26 and 63,027.28

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Solution

The fourth proportional to 105,445.36, 145,510.26 and 63,027.28 is: 86,975.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,445.36 : 145,510.26 = 63,027.28 : x
  2. Step 2: Convert to fraction form
    105,445.36/145,510.26 = 63,027.28/x
  3. Step 3: Cross multiply
    105,445.36x = 145,510.26 × 63,027.28
  4. Step 4: Simplify right side
    105,445.36x = 9,171,115,899.89
  5. Step 5: Solve for x
    x = 9,171,115,899.89/105,445.36
  6. Step 6: Final answer
    x = 86,975.05

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.