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Finding the Fourth Proportional to 93,112.70, 128,495.51 and 50,671.53

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Solution

The fourth proportional to 93,112.70, 128,495.51 and 50,671.53 is: 69,926.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,112.70 : 128,495.51 = 50,671.53 : x
  2. Step 2: Convert to fraction form
    93,112.70/128,495.51 = 50,671.53/x
  3. Step 3: Cross multiply
    93,112.70x = 128,495.51 × 50,671.53
  4. Step 4: Simplify right side
    93,112.70x = 6,511,063,836.47
  5. Step 5: Solve for x
    x = 6,511,063,836.47/93,112.70
  6. Step 6: Final answer
    x = 69,926.70

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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.