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Finding the Fourth Proportional to 92,783.30, 128,030.18 and 51,949.73

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Solution

The fourth proportional to 92,783.30, 128,030.18 and 51,949.73 is: 71,684.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,783.30 : 128,030.18 = 51,949.73 : x
  2. Step 2: Convert to fraction form
    92,783.30/128,030.18 = 51,949.73/x
  3. Step 3: Cross multiply
    92,783.30x = 128,030.18 × 51,949.73
  4. Step 4: Simplify right side
    92,783.30x = 6,651,133,343.18
  5. Step 5: Solve for x
    x = 6,651,133,343.18/92,783.30
  6. Step 6: Final answer
    x = 71,684.60

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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.