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Finding the Fourth Proportional to 922,389.10, 1,272,842.13 and 535,174.54

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Solution

The fourth proportional to 922,389.10, 1,272,842.13 and 535,174.54 is: 738,509.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,389.10 : 1,272,842.13 = 535,174.54 : x
  2. Step 2: Convert to fraction form
    922,389.10/1,272,842.13 = 535,174.54/x
  3. Step 3: Cross multiply
    922,389.10x = 1,272,842.13 × 535,174.54
  4. Step 4: Simplify right side
    922,389.10x = 681,192,701,415.37
  5. Step 5: Solve for x
    x = 681,192,701,415.37/922,389.10
  6. Step 6: Final answer
    x = 738,509.05

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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.