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Finding the Fourth Proportional to 92,894.85, 128,215.35 and 61,066.71

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Solution

The fourth proportional to 92,894.85, 128,215.35 and 61,066.71 is: 84,285.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,894.85 : 128,215.35 = 61,066.71 : x
  2. Step 2: Convert to fraction form
    92,894.85/128,215.35 = 61,066.71/x
  3. Step 3: Cross multiply
    92,894.85x = 128,215.35 × 61,066.71
  4. Step 4: Simplify right side
    92,894.85x = 7,829,689,596.00
  5. Step 5: Solve for x
    x = 7,829,689,596.00/92,894.85
  6. Step 6: Final answer
    x = 84,285.51

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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.