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Finding the Fourth Proportional to 621,356.36, 932,967.66 and 355,417.16

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Solution

The fourth proportional to 621,356.36, 932,967.66 and 355,417.16 is: 533,659.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,356.36 : 932,967.66 = 355,417.16 : x
  2. Step 2: Convert to fraction form
    621,356.36/932,967.66 = 355,417.16/x
  3. Step 3: Cross multiply
    621,356.36x = 932,967.66 × 355,417.16
  4. Step 4: Simplify right side
    621,356.36x = 331,592,716,089.05
  5. Step 5: Solve for x
    x = 331,592,716,089.05/621,356.36
  6. Step 6: Final answer
    x = 533,659.49

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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.