Home / 38,668,978.64-53,364,561-21,266,669.72

Finding the Fourth Proportional to 38,668,978.64, 53,364,561 and 21,266,669.72

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Solution

The fourth proportional to 38,668,978.64, 53,364,561 and 21,266,669.72 is: 29,348,757.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,668,978.64 : 53,364,561 = 21,266,669.72 : x
  2. Step 2: Convert to fraction form
    38,668,978.64/53,364,561 = 21,266,669.72/x
  3. Step 3: Cross multiply
    38,668,978.64x = 53,364,561 × 21,266,669.72
  4. Step 4: Simplify right side
    38,668,978.64x = 1,134,886,493,539,792.75
  5. Step 5: Solve for x
    x = 1,134,886,493,539,792.75/38,668,978.64
  6. Step 6: Final answer
    x = 29,348,757.93

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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.