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Finding the Fourth Proportional to 65,700.54, 90,667.62 and 37,406.34

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Solution

The fourth proportional to 65,700.54, 90,667.62 and 37,406.34 is: 51,621.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,700.54 : 90,667.62 = 37,406.34 : x
  2. Step 2: Convert to fraction form
    65,700.54/90,667.62 = 37,406.34/x
  3. Step 3: Cross multiply
    65,700.54x = 90,667.62 × 37,406.34
  4. Step 4: Simplify right side
    65,700.54x = 3,391,543,820.71
  5. Step 5: Solve for x
    x = 3,391,543,820.71/65,700.54
  6. Step 6: Final answer
    x = 51,621.25

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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.