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Finding the Fourth Proportional to 65,659.52, 90,620.56 and 37,374.32

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Solution

The fourth proportional to 65,659.52, 90,620.56 and 37,374.32 is: 51,582.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,659.52 : 90,620.56 = 37,374.32 : x
  2. Step 2: Convert to fraction form
    65,659.52/90,620.56 = 37,374.32/x
  3. Step 3: Cross multiply
    65,659.52x = 90,620.56 × 37,374.32
  4. Step 4: Simplify right side
    65,659.52x = 3,386,881,808.02
  5. Step 5: Solve for x
    x = 3,386,881,808.02/65,659.52
  6. Step 6: Final answer
    x = 51,582.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.