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Finding the Fourth Proportional to 38,019.60, 53,305.20 and 38,019.60

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Solution

The fourth proportional to 38,019.60, 53,305.20 and 38,019.60 is: 53,305.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,019.60 : 53,305.20 = 38,019.60 : x
  2. Step 2: Convert to fraction form
    38,019.60/53,305.20 = 38,019.60/x
  3. Step 3: Cross multiply
    38,019.60x = 53,305.20 × 38,019.60
  4. Step 4: Simplify right side
    38,019.60x = 2,026,642,381.92
  5. Step 5: Solve for x
    x = 2,026,642,381.92/38,019.60
  6. Step 6: Final answer
    x = 53,305.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.