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Finding the Fourth Proportional to 621,354.36, 932,964.66 and 355,415.16

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Solution

The fourth proportional to 621,354.36, 932,964.66 and 355,415.16 is: 533,656.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,354.36 : 932,964.66 = 355,415.16 : x
  2. Step 2: Convert to fraction form
    621,354.36/932,964.66 = 355,415.16/x
  3. Step 3: Cross multiply
    621,354.36x = 932,964.66 × 355,415.16
  4. Step 4: Simplify right side
    621,354.36x = 331,589,783,908.25
  5. Step 5: Solve for x
    x = 331,589,783,908.25/621,354.36
  6. Step 6: Final answer
    x = 533,656.49

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1.5x scale

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.