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Finding the Fourth Proportional to 96,686.80, 145,030.20 and 57,223.60

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Solution

The fourth proportional to 96,686.80, 145,030.20 and 57,223.60 is: 85,835.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,686.80 : 145,030.20 = 57,223.60 : x
  2. Step 2: Convert to fraction form
    96,686.80/145,030.20 = 57,223.60/x
  3. Step 3: Cross multiply
    96,686.80x = 145,030.20 × 57,223.60
  4. Step 4: Simplify right side
    96,686.80x = 8,299,150,152.72
  5. Step 5: Solve for x
    x = 8,299,150,152.72/96,686.80
  6. Step 6: Final answer
    x = 85,835.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.