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Finding the Fourth Proportional to 93,879.64, 129,555.48 and 51,435.46

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Solution

The fourth proportional to 93,879.64, 129,555.48 and 51,435.46 is: 70,981.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,879.64 : 129,555.48 = 51,435.46 : x
  2. Step 2: Convert to fraction form
    93,879.64/129,555.48 = 51,435.46/x
  3. Step 3: Cross multiply
    93,879.64x = 129,555.48 × 51,435.46
  4. Step 4: Simplify right side
    93,879.64x = 6,663,745,709.32
  5. Step 5: Solve for x
    x = 6,663,745,709.32/93,879.64
  6. Step 6: Final answer
    x = 70,981.80

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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.