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Finding the Fourth Proportional to 5,075.40, 7,617.16 and 4,913.40

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Solution

The fourth proportional to 5,075.40, 7,617.16 and 4,913.40 is: 7,374.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,075.40 : 7,617.16 = 4,913.40 : x
  2. Step 2: Convert to fraction form
    5,075.40/7,617.16 = 4,913.40/x
  3. Step 3: Cross multiply
    5,075.40x = 7,617.16 × 4,913.40
  4. Step 4: Simplify right side
    5,075.40x = 37,426,153.94
  5. Step 5: Solve for x
    x = 37,426,153.94/5,075.40
  6. Step 6: Final answer
    x = 7,374.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.