Home / 129,290,519.61-178,424,684.96-70,556,967.81

Finding the Fourth Proportional to 129,290,519.61, 178,424,684.96 and 70,556,967.81

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Solution

The fourth proportional to 129,290,519.61, 178,424,684.96 and 70,556,967.81 is: 97,370,671.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,290,519.61 : 178,424,684.96 = 70,556,967.81 : x
  2. Step 2: Convert to fraction form
    129,290,519.61/178,424,684.96 = 70,556,967.81/x
  3. Step 3: Cross multiply
    129,290,519.61x = 178,424,684.96 × 70,556,967.81
  4. Step 4: Simplify right side
    129,290,519.61x = 12,589,104,752,879,328
  5. Step 5: Solve for x
    x = 12,589,104,752,879,328/129,290,519.61
  6. Step 6: Final answer
    x = 97,370,671.81

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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.