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Finding the Fourth Proportional to 28,700.58, 39,597.01 and 17,938.11

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Solution

The fourth proportional to 28,700.58, 39,597.01 and 17,938.11 is: 24,748.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,700.58 : 39,597.01 = 17,938.11 : x
  2. Step 2: Convert to fraction form
    28,700.58/39,597.01 = 17,938.11/x
  3. Step 3: Cross multiply
    28,700.58x = 39,597.01 × 17,938.11
  4. Step 4: Simplify right side
    28,700.58x = 710,295,521.05
  5. Step 5: Solve for x
    x = 710,295,521.05/28,700.58
  6. Step 6: Final answer
    x = 24,748.47

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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.