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Finding the Fourth Proportional to 93,279.21, 128,719.14 and 52,449.60

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Solution

The fourth proportional to 93,279.21, 128,719.14 and 52,449.60 is: 72,376.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,279.21 : 128,719.14 = 52,449.60 : x
  2. Step 2: Convert to fraction form
    93,279.21/128,719.14 = 52,449.60/x
  3. Step 3: Cross multiply
    93,279.21x = 128,719.14 × 52,449.60
  4. Step 4: Simplify right side
    93,279.21x = 6,751,267,405.34
  5. Step 5: Solve for x
    x = 6,751,267,405.34/93,279.21
  6. Step 6: Final answer
    x = 72,376.98

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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.