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Finding the Fourth Proportional to 85,398.54, 128,104.29 and 23,068.50

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Solution

The fourth proportional to 85,398.54, 128,104.29 and 23,068.50 is: 34,604.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,398.54 : 128,104.29 = 23,068.50 : x
  2. Step 2: Convert to fraction form
    85,398.54/128,104.29 = 23,068.50/x
  3. Step 3: Cross multiply
    85,398.54x = 128,104.29 × 23,068.50
  4. Step 4: Simplify right side
    85,398.54x = 2,955,173,813.87
  5. Step 5: Solve for x
    x = 2,955,173,813.87/85,398.54
  6. Step 6: Final answer
    x = 34,604.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.