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Finding the Fourth Proportional to 93,189.82, 128,607.35 and 70,178.44

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Solution

The fourth proportional to 93,189.82, 128,607.35 and 70,178.44 is: 96,850.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,189.82 : 128,607.35 = 70,178.44 : x
  2. Step 2: Convert to fraction form
    93,189.82/128,607.35 = 70,178.44/x
  3. Step 3: Cross multiply
    93,189.82x = 128,607.35 × 70,178.44
  4. Step 4: Simplify right side
    93,189.82x = 9,025,463,531.74
  5. Step 5: Solve for x
    x = 9,025,463,531.74/93,189.82
  6. Step 6: Final answer
    x = 96,850.32

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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.