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Finding the Fourth Proportional to 65,800.34, 90,804.21 and 35,585.69

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Solution

The fourth proportional to 65,800.34, 90,804.21 and 35,585.69 is: 49,108.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,800.34 : 90,804.21 = 35,585.69 : x
  2. Step 2: Convert to fraction form
    65,800.34/90,804.21 = 35,585.69/x
  3. Step 3: Cross multiply
    65,800.34x = 90,804.21 × 35,585.69
  4. Step 4: Simplify right side
    65,800.34x = 3,231,330,561.32
  5. Step 5: Solve for x
    x = 3,231,330,561.32/65,800.34
  6. Step 6: Final answer
    x = 49,108.11

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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.