Home / 20,173,789,878.81-27,837,997,907.63-11,261,478,644.25

Finding the Fourth Proportional to 20,173,789,878.81, 27,837,997,907.63 and 11,261,478,644.25

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Solution

The fourth proportional to 20,173,789,878.81, 27,837,997,907.63 and 11,261,478,644.25 is: 15,539,817,794.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,173,789,878.81 : 27,837,997,907.63 = 11,261,478,644.25 : x
  2. Step 2: Convert to fraction form
    20,173,789,878.81/27,837,997,907.63 = 11,261,478,644.25/x
  3. Step 3: Cross multiply
    20,173,789,878.81x = 27,837,997,907.63 × 11,261,478,644.25
  4. Step 4: Simplify right side
    20,173,789,878.81x = 313,497,018,935,395,090,432
  5. Step 5: Solve for x
    x = 313,497,018,935,395,090,432/20,173,789,878.81
  6. Step 6: Final answer
    x = 15,539,817,794.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.