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Finding the Fourth Proportional to 93,143.88, 128,293.70 and 71,592.41

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Solution

The fourth proportional to 93,143.88, 128,293.70 and 71,592.41 is: 98,609.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,143.88 : 128,293.70 = 71,592.41 : x
  2. Step 2: Convert to fraction form
    93,143.88/128,293.70 = 71,592.41/x
  3. Step 3: Cross multiply
    93,143.88x = 128,293.70 × 71,592.41
  4. Step 4: Simplify right side
    93,143.88x = 9,184,855,133.59
  5. Step 5: Solve for x
    x = 9,184,855,133.59/93,143.88
  6. Step 6: Final answer
    x = 98,609.32

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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.