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Finding the Fourth Proportional to 93,126.92, 128,559.76 and 57,347.60

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Solution

The fourth proportional to 93,126.92, 128,559.76 and 57,347.60 is: 79,167.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,126.92 : 128,559.76 = 57,347.60 : x
  2. Step 2: Convert to fraction form
    93,126.92/128,559.76 = 57,347.60/x
  3. Step 3: Cross multiply
    93,126.92x = 128,559.76 × 57,347.60
  4. Step 4: Simplify right side
    93,126.92x = 7,372,592,906.41
  5. Step 5: Solve for x
    x = 7,372,592,906.41/93,126.92
  6. Step 6: Final answer
    x = 79,167.15

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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.