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Finding the Fourth Proportional to 652,353,454.12, 978,699,542.46 and 243,412,681

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Solution

The fourth proportional to 652,353,454.12, 978,699,542.46 and 243,412,681 is: 365,182,215.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,353,454.12 : 978,699,542.46 = 243,412,681 : x
  2. Step 2: Convert to fraction form
    652,353,454.12/978,699,542.46 = 243,412,681/x
  3. Step 3: Cross multiply
    652,353,454.12x = 978,699,542.46 × 243,412,681
  4. Step 4: Simplify right side
    652,353,454.12x = 238,227,879,523,661,952
  5. Step 5: Solve for x
    x = 238,227,879,523,661,952/652,353,454.12
  6. Step 6: Final answer
    x = 365,182,215.28

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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.