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Finding the Fourth Proportional to 7,917.12, 10,924.95 and 7,075.11

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Solution

The fourth proportional to 7,917.12, 10,924.95 and 7,075.11 is: 9,763.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,917.12 : 10,924.95 = 7,075.11 : x
  2. Step 2: Convert to fraction form
    7,917.12/10,924.95 = 7,075.11/x
  3. Step 3: Cross multiply
    7,917.12x = 10,924.95 × 7,075.11
  4. Step 4: Simplify right side
    7,917.12x = 77,295,222.99
  5. Step 5: Solve for x
    x = 77,295,222.99/7,917.12
  6. Step 6: Final answer
    x = 9,763.05

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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.