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Finding the Fourth Proportional to 107,683.92, 148,609.08 and 65,246.40

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Solution

The fourth proportional to 107,683.92, 148,609.08 and 65,246.40 is: 90,043.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,683.92 : 148,609.08 = 65,246.40 : x
  2. Step 2: Convert to fraction form
    107,683.92/148,609.08 = 65,246.40/x
  3. Step 3: Cross multiply
    107,683.92x = 148,609.08 × 65,246.40
  4. Step 4: Simplify right side
    107,683.92x = 9,696,207,477.31
  5. Step 5: Solve for x
    x = 9,696,207,477.31/107,683.92
  6. Step 6: Final answer
    x = 90,043.23

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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.