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Finding the Fourth Proportional to 93,228.80, 128,605.20 and 55,495.76

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Solution

The fourth proportional to 93,228.80, 128,605.20 and 55,495.76 is: 76,554.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,228.80 : 128,605.20 = 55,495.76 : x
  2. Step 2: Convert to fraction form
    93,228.80/128,605.20 = 55,495.76/x
  3. Step 3: Cross multiply
    93,228.80x = 128,605.20 × 55,495.76
  4. Step 4: Simplify right side
    93,228.80x = 7,137,043,313.95
  5. Step 5: Solve for x
    x = 7,137,043,313.95/93,228.80
  6. Step 6: Final answer
    x = 76,554.06

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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.