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Finding the Fourth Proportional to 28,592.88, 42,881.12 and 9,868.06

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Solution

The fourth proportional to 28,592.88, 42,881.12 and 9,868.06 is: 14,799.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,592.88 : 42,881.12 = 9,868.06 : x
  2. Step 2: Convert to fraction form
    28,592.88/42,881.12 = 9,868.06/x
  3. Step 3: Cross multiply
    28,592.88x = 42,881.12 × 9,868.06
  4. Step 4: Simplify right side
    28,592.88x = 423,153,465.03
  5. Step 5: Solve for x
    x = 423,153,465.03/28,592.88
  6. Step 6: Final answer
    x = 14,799.26

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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.