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Finding the Fourth Proportional to 621,968.13, 931,980.19 and 432,798.10

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Solution

The fourth proportional to 621,968.13, 931,980.19 and 432,798.10 is: 648,520.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,968.13 : 931,980.19 = 432,798.10 : x
  2. Step 2: Convert to fraction form
    621,968.13/931,980.19 = 432,798.10/x
  3. Step 3: Cross multiply
    621,968.13x = 931,980.19 × 432,798.10
  4. Step 4: Simplify right side
    621,968.13x = 403,359,255,469.64
  5. Step 5: Solve for x
    x = 403,359,255,469.64/621,968.13
  6. Step 6: Final answer
    x = 648,520.78

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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.