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Finding the Fourth Proportional to 93,062.90, 128,416.10 and 52,768.64

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Solution

The fourth proportional to 93,062.90, 128,416.10 and 52,768.64 is: 72,814.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,062.90 : 128,416.10 = 52,768.64 : x
  2. Step 2: Convert to fraction form
    93,062.90/128,416.10 = 52,768.64/x
  3. Step 3: Cross multiply
    93,062.90x = 128,416.10 × 52,768.64
  4. Step 4: Simplify right side
    93,062.90x = 6,776,342,951.10
  5. Step 5: Solve for x
    x = 6,776,342,951.10/93,062.90
  6. Step 6: Final answer
    x = 72,814.65

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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.