Home / 128,681,520,464.78-193,050,203,982.44-39,142,186,715.13

Finding the Fourth Proportional to 128,681,520,464.78, 193,050,203,982.44 and 39,142,186,715.13

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Solution

The fourth proportional to 128,681,520,464.78, 193,050,203,982.44 and 39,142,186,715.13 is: 58,721,773,743.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,681,520,464.78 : 193,050,203,982.44 = 39,142,186,715.13 : x
  2. Step 2: Convert to fraction form
    128,681,520,464.78/193,050,203,982.44 = 39,142,186,715.13/x
  3. Step 3: Cross multiply
    128,681,520,464.78x = 193,050,203,982.44 × 39,142,186,715.13
  4. Step 4: Simplify right side
    128,681,520,464.78x = 7,556,407,129,673,827,352,576
  5. Step 5: Solve for x
    x = 7,556,407,129,673,827,352,576/128,681,520,464.78
  6. Step 6: Final answer
    x = 58,721,773,743.28

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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.