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Finding the Fourth Proportional to 140,838.48, 211,258.20 and 35,657.40

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Solution

The fourth proportional to 140,838.48, 211,258.20 and 35,657.40 is: 53,486.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,838.48 : 211,258.20 = 35,657.40 : x
  2. Step 2: Convert to fraction form
    140,838.48/211,258.20 = 35,657.40/x
  3. Step 3: Cross multiply
    140,838.48x = 211,258.20 × 35,657.40
  4. Step 4: Simplify right side
    140,838.48x = 7,532,918,140.68
  5. Step 5: Solve for x
    x = 7,532,918,140.68/140,838.48
  6. Step 6: Final answer
    x = 53,486.22

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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.