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Finding the Fourth Proportional to 19,762.61, 29,643.91 and 8,075.81

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Solution

The fourth proportional to 19,762.61, 29,643.91 and 8,075.81 is: 12,113.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,762.61 : 29,643.91 = 8,075.81 : x
  2. Step 2: Convert to fraction form
    19,762.61/29,643.91 = 8,075.81/x
  3. Step 3: Cross multiply
    19,762.61x = 29,643.91 × 8,075.81
  4. Step 4: Simplify right side
    19,762.61x = 239,398,638.74
  5. Step 5: Solve for x
    x = 239,398,638.74/19,762.61
  6. Step 6: Final answer
    x = 12,113.72

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.