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Finding the Fourth Proportional to 19,468.40, 26,866.95 and 10,970.60

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Solution

The fourth proportional to 19,468.40, 26,866.95 and 10,970.60 is: 15,139.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,468.40 : 26,866.95 = 10,970.60 : x
  2. Step 2: Convert to fraction form
    19,468.40/26,866.95 = 10,970.60/x
  3. Step 3: Cross multiply
    19,468.40x = 26,866.95 × 10,970.60
  4. Step 4: Simplify right side
    19,468.40x = 294,746,506.82
  5. Step 5: Solve for x
    x = 294,746,506.82/19,468.40
  6. Step 6: Final answer
    x = 15,139.74

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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.