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Finding the Fourth Proportional to 9,859.50, 13,607.73 and 5,666.94

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Solution

The fourth proportional to 9,859.50, 13,607.73 and 5,666.94 is: 7,821.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,859.50 : 13,607.73 = 5,666.94 : x
  2. Step 2: Convert to fraction form
    9,859.50/13,607.73 = 5,666.94/x
  3. Step 3: Cross multiply
    9,859.50x = 13,607.73 × 5,666.94
  4. Step 4: Simplify right side
    9,859.50x = 77,114,189.45
  5. Step 5: Solve for x
    x = 77,114,189.45/9,859.50
  6. Step 6: Final answer
    x = 7,821.31

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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.