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Finding the Fourth Proportional to 88,707.16, 122,385 and 56,893.60

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Solution

The fourth proportional to 88,707.16, 122,385 and 56,893.60 is: 78,493.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,707.16 : 122,385 = 56,893.60 : x
  2. Step 2: Convert to fraction form
    88,707.16/122,385 = 56,893.60/x
  3. Step 3: Cross multiply
    88,707.16x = 122,385 × 56,893.60
  4. Step 4: Simplify right side
    88,707.16x = 6,962,923,236
  5. Step 5: Solve for x
    x = 6,962,923,236/88,707.16
  6. Step 6: Final answer
    x = 78,493.36

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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.