Home / 85,393,036.67-128,089,556.35-20,696,841.73

Finding the Fourth Proportional to 85,393,036.67, 128,089,556.35 and 20,696,841.73

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Solution

The fourth proportional to 85,393,036.67, 128,089,556.35 and 20,696,841.73 is: 31,045,262.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,393,036.67 : 128,089,556.35 = 20,696,841.73 : x
  2. Step 2: Convert to fraction form
    85,393,036.67/128,089,556.35 = 20,696,841.73/x
  3. Step 3: Cross multiply
    85,393,036.67x = 128,089,556.35 × 20,696,841.73
  4. Step 4: Simplify right side
    85,393,036.67x = 2,651,049,274,845,372
  5. Step 5: Solve for x
    x = 2,651,049,274,845,372/85,393,036.67
  6. Step 6: Final answer
    x = 31,045,262.92

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Double scale
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1.5x scale

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.