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Finding the Fourth Proportional to 292,528.80, 438,793.20 and 245,289.60

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Solution

The fourth proportional to 292,528.80, 438,793.20 and 245,289.60 is: 367,934.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,528.80 : 438,793.20 = 245,289.60 : x
  2. Step 2: Convert to fraction form
    292,528.80/438,793.20 = 245,289.60/x
  3. Step 3: Cross multiply
    292,528.80x = 438,793.20 × 245,289.60
  4. Step 4: Simplify right side
    292,528.80x = 107,631,408,510.72
  5. Step 5: Solve for x
    x = 107,631,408,510.72/292,528.80
  6. Step 6: Final answer
    x = 367,934.40

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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.