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Finding the Fourth Proportional to 93,370.15, 128,845.68 and 53,078.32

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Solution

The fourth proportional to 93,370.15, 128,845.68 and 53,078.32 is: 73,245.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,370.15 : 128,845.68 = 53,078.32 : x
  2. Step 2: Convert to fraction form
    93,370.15/128,845.68 = 53,078.32/x
  3. Step 3: Cross multiply
    93,370.15x = 128,845.68 × 53,078.32
  4. Step 4: Simplify right side
    93,370.15x = 6,838,911,589.43
  5. Step 5: Solve for x
    x = 6,838,911,589.43/93,370.15
  6. Step 6: Final answer
    x = 73,245.16

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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.