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Finding the Fourth Proportional to 8,963.40, 12,370.02 and 4,984.95

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Solution

The fourth proportional to 8,963.40, 12,370.02 and 4,984.95 is: 6,879.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,963.40 : 12,370.02 = 4,984.95 : x
  2. Step 2: Convert to fraction form
    8,963.40/12,370.02 = 4,984.95/x
  3. Step 3: Cross multiply
    8,963.40x = 12,370.02 × 4,984.95
  4. Step 4: Simplify right side
    8,963.40x = 61,663,931.20
  5. Step 5: Solve for x
    x = 61,663,931.20/8,963.40
  6. Step 6: Final answer
    x = 6,879.52

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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.