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Finding the Fourth Proportional to 143,000.44, 197,345.88 and 86,400.88

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Solution

The fourth proportional to 143,000.44, 197,345.88 and 86,400.88 is: 119,236.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,000.44 : 197,345.88 = 86,400.88 : x
  2. Step 2: Convert to fraction form
    143,000.44/197,345.88 = 86,400.88/x
  3. Step 3: Cross multiply
    143,000.44x = 197,345.88 × 86,400.88
  4. Step 4: Simplify right side
    143,000.44x = 17,050,857,696.37
  5. Step 5: Solve for x
    x = 17,050,857,696.37/143,000.44
  6. Step 6: Final answer
    x = 119,236.40

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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.