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Finding the Fourth Proportional to 28,445.98, 42,669.88 and 9,725.26

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Solution

The fourth proportional to 28,445.98, 42,669.88 and 9,725.26 is: 14,588.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,445.98 : 42,669.88 = 9,725.26 : x
  2. Step 2: Convert to fraction form
    28,445.98/42,669.88 = 9,725.26/x
  3. Step 3: Cross multiply
    28,445.98x = 42,669.88 × 9,725.26
  4. Step 4: Simplify right side
    28,445.98x = 414,975,677.17
  5. Step 5: Solve for x
    x = 414,975,677.17/28,445.98
  6. Step 6: Final answer
    x = 14,588.20

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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.