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Finding the Fourth Proportional to 207,848.60, 310,994.40 and 148,015.40

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Solution

The fourth proportional to 207,848.60, 310,994.40 and 148,015.40 is: 221,468.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,848.60 : 310,994.40 = 148,015.40 : x
  2. Step 2: Convert to fraction form
    207,848.60/310,994.40 = 148,015.40/x
  3. Step 3: Cross multiply
    207,848.60x = 310,994.40 × 148,015.40
  4. Step 4: Simplify right side
    207,848.60x = 46,031,960,513.76
  5. Step 5: Solve for x
    x = 46,031,960,513.76/207,848.60
  6. Step 6: Final answer
    x = 221,468.71

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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.