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Finding the Fourth Proportional to 12,312.63, 18,477.05 and 4,521.51

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Solution

The fourth proportional to 12,312.63, 18,477.05 and 4,521.51 is: 6,785.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,312.63 : 18,477.05 = 4,521.51 : x
  2. Step 2: Convert to fraction form
    12,312.63/18,477.05 = 4,521.51/x
  3. Step 3: Cross multiply
    12,312.63x = 18,477.05 × 4,521.51
  4. Step 4: Simplify right side
    12,312.63x = 83,544,143.74
  5. Step 5: Solve for x
    x = 83,544,143.74/12,312.63
  6. Step 6: Final answer
    x = 6,785.24

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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.