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Finding the Fourth Proportional to 25,617.90, 38,430.90 and 9,822.30

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Solution

The fourth proportional to 25,617.90, 38,430.90 and 9,822.30 is: 14,735.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,617.90 : 38,430.90 = 9,822.30 : x
  2. Step 2: Convert to fraction form
    25,617.90/38,430.90 = 9,822.30/x
  3. Step 3: Cross multiply
    25,617.90x = 38,430.90 × 9,822.30
  4. Step 4: Simplify right side
    25,617.90x = 377,479,829.07
  5. Step 5: Solve for x
    x = 377,479,829.07/25,617.90
  6. Step 6: Final answer
    x = 14,735.00

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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.