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Finding the Fourth Proportional to 140,365.65, 210,690.40 and 124,457.05

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Solution

The fourth proportional to 140,365.65, 210,690.40 and 124,457.05 is: 186,811.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,365.65 : 210,690.40 = 124,457.05 : x
  2. Step 2: Convert to fraction form
    140,365.65/210,690.40 = 124,457.05/x
  3. Step 3: Cross multiply
    140,365.65x = 210,690.40 × 124,457.05
  4. Step 4: Simplify right side
    140,365.65x = 26,221,905,647.32
  5. Step 5: Solve for x
    x = 26,221,905,647.32/140,365.65
  6. Step 6: Final answer
    x = 186,811.41

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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.