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Finding the Fourth Proportional to 292,036.38, 438,051.64 and 92,356.80

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Solution

The fourth proportional to 292,036.38, 438,051.64 and 92,356.80 is: 138,534.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,036.38 : 438,051.64 = 92,356.80 : x
  2. Step 2: Convert to fraction form
    292,036.38/438,051.64 = 92,356.80/x
  3. Step 3: Cross multiply
    292,036.38x = 438,051.64 × 92,356.80
  4. Step 4: Simplify right side
    292,036.38x = 40,457,047,705.15
  5. Step 5: Solve for x
    x = 40,457,047,705.15/292,036.38
  6. Step 6: Final answer
    x = 138,534.27

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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.