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Finding the Fourth Proportional to 93,212.70, 128,636.91 and 50,774.28

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Solution

The fourth proportional to 93,212.70, 128,636.91 and 50,774.28 is: 70,070.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,212.70 : 128,636.91 = 50,774.28 : x
  2. Step 2: Convert to fraction form
    93,212.70/128,636.91 = 50,774.28/x
  3. Step 3: Cross multiply
    93,212.70x = 128,636.91 × 50,774.28
  4. Step 4: Simplify right side
    93,212.70x = 6,531,446,486.67
  5. Step 5: Solve for x
    x = 6,531,446,486.67/93,212.70
  6. Step 6: Final answer
    x = 70,070.35

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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.