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Finding the Fourth Proportional to 85,398.66, 128,097.70 and 23,069.16

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Solution

The fourth proportional to 85,398.66, 128,097.70 and 23,069.16 is: 34,603.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,398.66 : 128,097.70 = 23,069.16 : x
  2. Step 2: Convert to fraction form
    85,398.66/128,097.70 = 23,069.16/x
  3. Step 3: Cross multiply
    85,398.66x = 128,097.70 × 23,069.16
  4. Step 4: Simplify right side
    85,398.66x = 2,955,106,336.93
  5. Step 5: Solve for x
    x = 2,955,106,336.93/85,398.66
  6. Step 6: Final answer
    x = 34,603.66

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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.