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Finding the Fourth Proportional to 93,776.60, 129,412.57 and 55,538.32

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Solution

The fourth proportional to 93,776.60, 129,412.57 and 55,538.32 is: 76,643.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,776.60 : 129,412.57 = 55,538.32 : x
  2. Step 2: Convert to fraction form
    93,776.60/129,412.57 = 55,538.32/x
  3. Step 3: Cross multiply
    93,776.60x = 129,412.57 × 55,538.32
  4. Step 4: Simplify right side
    93,776.60x = 7,187,356,724.68
  5. Step 5: Solve for x
    x = 7,187,356,724.68/93,776.60
  6. Step 6: Final answer
    x = 76,643.39

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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.