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Finding the Fourth Proportional to 363,973.60, 545,960.40 and 186,421.60

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Solution

The fourth proportional to 363,973.60, 545,960.40 and 186,421.60 is: 279,632.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,973.60 : 545,960.40 = 186,421.60 : x
  2. Step 2: Convert to fraction form
    363,973.60/545,960.40 = 186,421.60/x
  3. Step 3: Cross multiply
    363,973.60x = 545,960.40 × 186,421.60
  4. Step 4: Simplify right side
    363,973.60x = 101,778,811,304.64
  5. Step 5: Solve for x
    x = 101,778,811,304.64/363,973.60
  6. Step 6: Final answer
    x = 279,632.40

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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.