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Finding the Fourth Proportional to 28,598.97, 42,887.93 and 9,874.20

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Solution

The fourth proportional to 28,598.97, 42,887.93 and 9,874.20 is: 14,807.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,598.97 : 42,887.93 = 9,874.20 : x
  2. Step 2: Convert to fraction form
    28,598.97/42,887.93 = 9,874.20/x
  3. Step 3: Cross multiply
    28,598.97x = 42,887.93 × 9,874.20
  4. Step 4: Simplify right side
    28,598.97x = 423,483,998.41
  5. Step 5: Solve for x
    x = 423,483,998.41/28,598.97
  6. Step 6: Final answer
    x = 14,807.67

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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.