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Finding the Fourth Proportional to 93,441.47, 128,947.37 and 51,000.30

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Solution

The fourth proportional to 93,441.47, 128,947.37 and 51,000.30 is: 70,379.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,441.47 : 128,947.37 = 51,000.30 : x
  2. Step 2: Convert to fraction form
    93,441.47/128,947.37 = 51,000.30/x
  3. Step 3: Cross multiply
    93,441.47x = 128,947.37 × 51,000.30
  4. Step 4: Simplify right side
    93,441.47x = 6,576,354,299.21
  5. Step 5: Solve for x
    x = 6,576,354,299.21/93,441.47
  6. Step 6: Final answer
    x = 70,379.40

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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.