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Finding the Fourth Proportional to 93,084.60, 128,457.84 and 50,643.48

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Solution

The fourth proportional to 93,084.60, 128,457.84 and 50,643.48 is: 69,888.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,084.60 : 128,457.84 = 50,643.48 : x
  2. Step 2: Convert to fraction form
    93,084.60/128,457.84 = 50,643.48/x
  3. Step 3: Cross multiply
    93,084.60x = 128,457.84 × 50,643.48
  4. Step 4: Simplify right side
    93,084.60x = 6,505,552,050.88
  5. Step 5: Solve for x
    x = 6,505,552,050.88/93,084.60
  6. Step 6: Final answer
    x = 69,888.60

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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.