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Finding the Fourth Proportional to 19,953.40, 29,925.90 and 10,083.40

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Solution

The fourth proportional to 19,953.40, 29,925.90 and 10,083.40 is: 15,122.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,953.40 : 29,925.90 = 10,083.40 : x
  2. Step 2: Convert to fraction form
    19,953.40/29,925.90 = 10,083.40/x
  3. Step 3: Cross multiply
    19,953.40x = 29,925.90 × 10,083.40
  4. Step 4: Simplify right side
    19,953.40x = 301,754,820.06
  5. Step 5: Solve for x
    x = 301,754,820.06/19,953.40
  6. Step 6: Final answer
    x = 15,122.98

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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.