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Finding the Fourth Proportional to 93,068.60, 128,110.41 and 81,111.38

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Solution

The fourth proportional to 93,068.60, 128,110.41 and 81,111.38 is: 111,651.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,068.60 : 128,110.41 = 81,111.38 : x
  2. Step 2: Convert to fraction form
    93,068.60/128,110.41 = 81,111.38/x
  3. Step 3: Cross multiply
    93,068.60x = 128,110.41 × 81,111.38
  4. Step 4: Simplify right side
    93,068.60x = 10,391,211,506.91
  5. Step 5: Solve for x
    x = 10,391,211,506.91/93,068.60
  6. Step 6: Final answer
    x = 111,651.11

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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.