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Finding the Fourth Proportional to 65,063.81, 89,783.07 and 39,566.66

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Solution

The fourth proportional to 65,063.81, 89,783.07 and 39,566.66 is: 54,598.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,063.81 : 89,783.07 = 39,566.66 : x
  2. Step 2: Convert to fraction form
    65,063.81/89,783.07 = 39,566.66/x
  3. Step 3: Cross multiply
    65,063.81x = 89,783.07 × 39,566.66
  4. Step 4: Simplify right side
    65,063.81x = 3,552,416,204.45
  5. Step 5: Solve for x
    x = 3,552,416,204.45/65,063.81
  6. Step 6: Final answer
    x = 54,598.96

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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.