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Finding the Fourth Proportional to 292,421,416.44, 438,628,743.02 and 71,094,010.01

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Solution

The fourth proportional to 292,421,416.44, 438,628,743.02 and 71,094,010.01 is: 106,640,192.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,421,416.44 : 438,628,743.02 = 71,094,010.01 : x
  2. Step 2: Convert to fraction form
    292,421,416.44/438,628,743.02 = 71,094,010.01/x
  3. Step 3: Cross multiply
    292,421,416.44x = 438,628,743.02 × 71,094,010.01
  4. Step 4: Simplify right side
    292,421,416.44x = 31,183,876,244,388,980
  5. Step 5: Solve for x
    x = 31,183,876,244,388,980/292,421,416.44
  6. Step 6: Final answer
    x = 106,640,192.86

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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.