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Finding the Fourth Proportional to 93,424.24, 128,928.30 and 53,143.84

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Solution

The fourth proportional to 93,424.24, 128,928.30 and 53,143.84 is: 73,340.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,424.24 : 128,928.30 = 53,143.84 : x
  2. Step 2: Convert to fraction form
    93,424.24/128,928.30 = 53,143.84/x
  3. Step 3: Cross multiply
    93,424.24x = 128,928.30 × 53,143.84
  4. Step 4: Simplify right side
    93,424.24x = 6,851,744,946.67
  5. Step 5: Solve for x
    x = 6,851,744,946.67/93,424.24
  6. Step 6: Final answer
    x = 73,340.12

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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.