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Finding the Fourth Proportional to 9,970.36, 13,737.81 and 9,059.11

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Solution

The fourth proportional to 9,970.36, 13,737.81 and 9,059.11 is: 12,482.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,970.36 : 13,737.81 = 9,059.11 : x
  2. Step 2: Convert to fraction form
    9,970.36/13,737.81 = 9,059.11/x
  3. Step 3: Cross multiply
    9,970.36x = 13,737.81 × 9,059.11
  4. Step 4: Simplify right side
    9,970.36x = 124,452,331.95
  5. Step 5: Solve for x
    x = 124,452,331.95/9,970.36
  6. Step 6: Final answer
    x = 12,482.23

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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.