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Finding the Fourth Proportional to 92,959.73, 128,281.75 and 52,686.50

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Solution

The fourth proportional to 92,959.73, 128,281.75 and 52,686.50 is: 72,705.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,959.73 : 128,281.75 = 52,686.50 : x
  2. Step 2: Convert to fraction form
    92,959.73/128,281.75 = 52,686.50/x
  3. Step 3: Cross multiply
    92,959.73x = 128,281.75 × 52,686.50
  4. Step 4: Simplify right side
    92,959.73x = 6,758,716,518.02
  5. Step 5: Solve for x
    x = 6,758,716,518.02/92,959.73
  6. Step 6: Final answer
    x = 72,705.86

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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.