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Finding the Fourth Proportional to 19,482.79, 26,884.90 and 10,985.22

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Solution

The fourth proportional to 19,482.79, 26,884.90 and 10,985.22 is: 15,158.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,482.79 : 26,884.90 = 10,985.22 : x
  2. Step 2: Convert to fraction form
    19,482.79/26,884.90 = 10,985.22/x
  3. Step 3: Cross multiply
    19,482.79x = 26,884.90 × 10,985.22
  4. Step 4: Simplify right side
    19,482.79x = 295,336,541.18
  5. Step 5: Solve for x
    x = 295,336,541.18/19,482.79
  6. Step 6: Final answer
    x = 15,158.84

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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.