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Finding the Fourth Proportional to 13,900.94, 20,851.51 and 4,666.94

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Solution

The fourth proportional to 13,900.94, 20,851.51 and 4,666.94 is: 7,000.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,900.94 : 20,851.51 = 4,666.94 : x
  2. Step 2: Convert to fraction form
    13,900.94/20,851.51 = 4,666.94/x
  3. Step 3: Cross multiply
    13,900.94x = 20,851.51 × 4,666.94
  4. Step 4: Simplify right side
    13,900.94x = 97,312,746.08
  5. Step 5: Solve for x
    x = 97,312,746.08/13,900.94
  6. Step 6: Final answer
    x = 7,000.44

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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.