Home / 86,927,999.20-130,391,998.80-43,780,530.40

Finding the Fourth Proportional to 86,927,999.20, 130,391,998.80 and 43,780,530.40

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Solution

The fourth proportional to 86,927,999.20, 130,391,998.80 and 43,780,530.40 is: 65,670,795.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,927,999.20 : 130,391,998.80 = 43,780,530.40 : x
  2. Step 2: Convert to fraction form
    86,927,999.20/130,391,998.80 = 43,780,530.40/x
  3. Step 3: Cross multiply
    86,927,999.20x = 130,391,998.80 × 43,780,530.40
  4. Step 4: Simplify right side
    86,927,999.20x = 5,708,630,867,380,163
  5. Step 5: Solve for x
    x = 5,708,630,867,380,163/86,927,999.20
  6. Step 6: Final answer
    x = 65,670,795.60

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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.