Home / 86,262,989.12-129,298,639.53-65,724,999.69

Finding the Fourth Proportional to 86,262,989.12, 129,298,639.53 and 65,724,999.69

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Solution

The fourth proportional to 86,262,989.12, 129,298,639.53 and 65,724,999.69 is: 98,514,474.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,262,989.12 : 129,298,639.53 = 65,724,999.69 : x
  2. Step 2: Convert to fraction form
    86,262,989.12/129,298,639.53 = 65,724,999.69/x
  3. Step 3: Cross multiply
    86,262,989.12x = 129,298,639.53 × 65,724,999.69
  4. Step 4: Simplify right side
    86,262,989.12x = 8,498,153,043,026,672
  5. Step 5: Solve for x
    x = 8,498,153,043,026,672/86,262,989.12
  6. Step 6: Final answer
    x = 98,514,474.51

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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.