Home / 129,290,517.36-178,424,681.85-70,556,965.56

Finding the Fourth Proportional to 129,290,517.36, 178,424,681.85 and 70,556,965.56

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Solution

The fourth proportional to 129,290,517.36, 178,424,681.85 and 70,556,965.56 is: 97,370,668.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,290,517.36 : 178,424,681.85 = 70,556,965.56 : x
  2. Step 2: Convert to fraction form
    129,290,517.36/178,424,681.85 = 70,556,965.56/x
  3. Step 3: Cross multiply
    129,290,517.36x = 178,424,681.85 × 70,556,965.56
  4. Step 4: Simplify right side
    129,290,517.36x = 12,589,104,132,344,408
  5. Step 5: Solve for x
    x = 12,589,104,132,344,408/129,290,517.36
  6. Step 6: Final answer
    x = 97,370,668.70

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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.