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Finding the Fourth Proportional to 14,020.66, 19,333.64 and 8,985.10

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Solution

The fourth proportional to 14,020.66, 19,333.64 and 8,985.10 is: 12,389.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,020.66 : 19,333.64 = 8,985.10 : x
  2. Step 2: Convert to fraction form
    14,020.66/19,333.64 = 8,985.10/x
  3. Step 3: Cross multiply
    14,020.66x = 19,333.64 × 8,985.10
  4. Step 4: Simplify right side
    14,020.66x = 173,714,688.76
  5. Step 5: Solve for x
    x = 173,714,688.76/14,020.66
  6. Step 6: Final answer
    x = 12,389.91

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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.