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Finding the Fourth Proportional to 463,648,927.20, 695,473,390.80 and 248,658,079.20

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Solution

The fourth proportional to 463,648,927.20, 695,473,390.80 and 248,658,079.20 is: 372,987,118.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,648,927.20 : 695,473,390.80 = 248,658,079.20 : x
  2. Step 2: Convert to fraction form
    463,648,927.20/695,473,390.80 = 248,658,079.20/x
  3. Step 3: Cross multiply
    463,648,927.20x = 695,473,390.80 × 248,658,079.20
  4. Step 4: Simplify right side
    463,648,927.20x = 172,935,077,491,038,944
  5. Step 5: Solve for x
    x = 172,935,077,491,038,944/463,648,927.20
  6. Step 6: Final answer
    x = 372,987,118.80

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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.