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Finding the Fourth Proportional to 65,886.81, 90,924.51 and 35,672.76

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Solution

The fourth proportional to 65,886.81, 90,924.51 and 35,672.76 is: 49,228.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,886.81 : 90,924.51 = 35,672.76 : x
  2. Step 2: Convert to fraction form
    65,886.81/90,924.51 = 35,672.76/x
  3. Step 3: Cross multiply
    65,886.81x = 90,924.51 × 35,672.76
  4. Step 4: Simplify right side
    65,886.81x = 3,243,528,223.35
  5. Step 5: Solve for x
    x = 3,243,528,223.35/65,886.81
  6. Step 6: Final answer
    x = 49,228.79

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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.