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Finding the Fourth Proportional to 619,373.80, 928,830.30 and 245,319.40

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Solution

The fourth proportional to 619,373.80, 928,830.30 and 245,319.40 is: 367,887.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,373.80 : 928,830.30 = 245,319.40 : x
  2. Step 2: Convert to fraction form
    619,373.80/928,830.30 = 245,319.40/x
  3. Step 3: Cross multiply
    619,373.80x = 928,830.30 × 245,319.40
  4. Step 4: Simplify right side
    619,373.80x = 227,860,091,897.82
  5. Step 5: Solve for x
    x = 227,860,091,897.82/619,373.80
  6. Step 6: Final answer
    x = 367,887.84

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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.