Home / 12,961,409.32-17,886,687.28-7,160,193.84

Finding the Fourth Proportional to 12,961,409.32, 17,886,687.28 and 7,160,193.84

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Solution

The fourth proportional to 12,961,409.32, 17,886,687.28 and 7,160,193.84 is: 9,881,035.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,961,409.32 : 17,886,687.28 = 7,160,193.84 : x
  2. Step 2: Convert to fraction form
    12,961,409.32/17,886,687.28 = 7,160,193.84/x
  3. Step 3: Cross multiply
    12,961,409.32x = 17,886,687.28 × 7,160,193.84
  4. Step 4: Simplify right side
    12,961,409.32x = 128,072,148,080,262.36
  5. Step 5: Solve for x
    x = 128,072,148,080,262.36/12,961,409.32
  6. Step 6: Final answer
    x = 9,881,035.69

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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.