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Finding the Fourth Proportional to 292,355.44, 438,533.16 and 70,739.44

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Solution

The fourth proportional to 292,355.44, 438,533.16 and 70,739.44 is: 106,109.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,355.44 : 438,533.16 = 70,739.44 : x
  2. Step 2: Convert to fraction form
    292,355.44/438,533.16 = 70,739.44/x
  3. Step 3: Cross multiply
    292,355.44x = 438,533.16 × 70,739.44
  4. Step 4: Simplify right side
    292,355.44x = 31,021,590,159.83
  5. Step 5: Solve for x
    x = 31,021,590,159.83/292,355.44
  6. Step 6: Final answer
    x = 106,109.16

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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.