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Finding the Fourth Proportional to 7,756.08, 10,706.88 and 4,963.20

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Solution

The fourth proportional to 7,756.08, 10,706.88 and 4,963.20 is: 6,851.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,756.08 : 10,706.88 = 4,963.20 : x
  2. Step 2: Convert to fraction form
    7,756.08/10,706.88 = 4,963.20/x
  3. Step 3: Cross multiply
    7,756.08x = 10,706.88 × 4,963.20
  4. Step 4: Simplify right side
    7,756.08x = 53,140,386.82
  5. Step 5: Solve for x
    x = 53,140,386.82/7,756.08
  6. Step 6: Final answer
    x = 6,851.45

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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.