Home / 128,662,784.60-177,556,014.22-69,925,453.98

Finding the Fourth Proportional to 128,662,784.60, 177,556,014.22 and 69,925,453.98

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Solution

The fourth proportional to 128,662,784.60, 177,556,014.22 and 69,925,453.98 is: 96,497,871.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,662,784.60 : 177,556,014.22 = 69,925,453.98 : x
  2. Step 2: Convert to fraction form
    128,662,784.60/177,556,014.22 = 69,925,453.98/x
  3. Step 3: Cross multiply
    128,662,784.60x = 177,556,014.22 × 69,925,453.98
  4. Step 4: Simplify right side
    128,662,784.60x = 12,415,684,901,212,836
  5. Step 5: Solve for x
    x = 12,415,684,901,212,836/128,662,784.60
  6. Step 6: Final answer
    x = 96,497,871.86

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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.