Home / 76,985,125.60-115,589,662.80-57,949,477.60

Finding the Fourth Proportional to 76,985,125.60, 115,589,662.80 and 57,949,477.60

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Solution

The fourth proportional to 76,985,125.60, 115,589,662.80 and 57,949,477.60 is: 87,008,503.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,985,125.60 : 115,589,662.80 = 57,949,477.60 : x
  2. Step 2: Convert to fraction form
    76,985,125.60/115,589,662.80 = 57,949,477.60/x
  3. Step 3: Cross multiply
    76,985,125.60x = 115,589,662.80 × 57,949,477.60
  4. Step 4: Simplify right side
    76,985,125.60x = 6,698,360,575,220,153
  5. Step 5: Solve for x
    x = 6,698,360,575,220,153/76,985,125.60
  6. Step 6: Final answer
    x = 87,008,503.57

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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.