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Finding the Fourth Proportional to 93,233.80, 139,850.70 and 78,653.80

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Solution

The fourth proportional to 93,233.80, 139,850.70 and 78,653.80 is: 117,980.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,233.80 : 139,850.70 = 78,653.80 : x
  2. Step 2: Convert to fraction form
    93,233.80/139,850.70 = 78,653.80/x
  3. Step 3: Cross multiply
    93,233.80x = 139,850.70 × 78,653.80
  4. Step 4: Simplify right side
    93,233.80x = 10,999,788,987.66
  5. Step 5: Solve for x
    x = 10,999,788,987.66/93,233.80
  6. Step 6: Final answer
    x = 117,980.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.