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Finding the Fourth Proportional to 402,962.40, 603,925.20 and 245,023.20

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Solution

The fourth proportional to 402,962.40, 603,925.20 and 245,023.20 is: 367,219.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,962.40 : 603,925.20 = 245,023.20 : x
  2. Step 2: Convert to fraction form
    402,962.40/603,925.20 = 245,023.20/x
  3. Step 3: Cross multiply
    402,962.40x = 603,925.20 × 245,023.20
  4. Step 4: Simplify right side
    402,962.40x = 147,975,685,064.64
  5. Step 5: Solve for x
    x = 147,975,685,064.64/402,962.40
  6. Step 6: Final answer
    x = 367,219.58

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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.