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Finding the Fourth Proportional to 14,607.54, 21,878.51 and 14,115.47

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Solution

The fourth proportional to 14,607.54, 21,878.51 and 14,115.47 is: 21,141.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,607.54 : 21,878.51 = 14,115.47 : x
  2. Step 2: Convert to fraction form
    14,607.54/21,878.51 = 14,115.47/x
  3. Step 3: Cross multiply
    14,607.54x = 21,878.51 × 14,115.47
  4. Step 4: Simplify right side
    14,607.54x = 308,825,271.58
  5. Step 5: Solve for x
    x = 308,825,271.58/14,607.54
  6. Step 6: Final answer
    x = 21,141.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.