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Finding the Fourth Proportional to 14,433.50, 19,918.23 and 7,809.50

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Solution

The fourth proportional to 14,433.50, 19,918.23 and 7,809.50 is: 10,777.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,433.50 : 19,918.23 = 7,809.50 : x
  2. Step 2: Convert to fraction form
    14,433.50/19,918.23 = 7,809.50/x
  3. Step 3: Cross multiply
    14,433.50x = 19,918.23 × 7,809.50
  4. Step 4: Simplify right side
    14,433.50x = 155,551,417.19
  5. Step 5: Solve for x
    x = 155,551,417.19/14,433.50
  6. Step 6: Final answer
    x = 10,777.11

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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.