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Finding the Fourth Proportional to 18,830.66, 25,985.42 and 10,332.60

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Solution

The fourth proportional to 18,830.66, 25,985.42 and 10,332.60 is: 14,258.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,830.66 : 25,985.42 = 10,332.60 : x
  2. Step 2: Convert to fraction form
    18,830.66/25,985.42 = 10,332.60/x
  3. Step 3: Cross multiply
    18,830.66x = 25,985.42 × 10,332.60
  4. Step 4: Simplify right side
    18,830.66x = 268,496,950.69
  5. Step 5: Solve for x
    x = 268,496,950.69/18,830.66
  6. Step 6: Final answer
    x = 14,258.50

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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.