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Finding the Fourth Proportional to 93,159.76, 128,571.44 and 54,927.76

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Solution

The fourth proportional to 93,159.76, 128,571.44 and 54,927.76 is: 75,806.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,159.76 : 128,571.44 = 54,927.76 : x
  2. Step 2: Convert to fraction form
    93,159.76/128,571.44 = 54,927.76/x
  3. Step 3: Cross multiply
    93,159.76x = 128,571.44 × 54,927.76
  4. Step 4: Simplify right side
    93,159.76x = 7,062,141,199.17
  5. Step 5: Solve for x
    x = 7,062,141,199.17/93,159.76
  6. Step 6: Final answer
    x = 75,806.78

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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.