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Finding the Fourth Proportional to 93,185.72, 128,579.20 and 54,957.24

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Solution

The fourth proportional to 93,185.72, 128,579.20 and 54,957.24 is: 75,830.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,185.72 : 128,579.20 = 54,957.24 : x
  2. Step 2: Convert to fraction form
    93,185.72/128,579.20 = 54,957.24/x
  3. Step 3: Cross multiply
    93,185.72x = 128,579.20 × 54,957.24
  4. Step 4: Simplify right side
    93,185.72x = 7,066,357,953.41
  5. Step 5: Solve for x
    x = 7,066,357,953.41/93,185.72
  6. Step 6: Final answer
    x = 75,830.91

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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.