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Finding the Fourth Proportional to 621,000.95, 931,501.43 and 432,044.15

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Solution

The fourth proportional to 621,000.95, 931,501.43 and 432,044.15 is: 648,066.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,000.95 : 931,501.43 = 432,044.15 : x
  2. Step 2: Convert to fraction form
    621,000.95/931,501.43 = 432,044.15/x
  3. Step 3: Cross multiply
    621,000.95x = 931,501.43 × 432,044.15
  4. Step 4: Simplify right side
    621,000.95x = 402,449,741,387.91
  5. Step 5: Solve for x
    x = 402,449,741,387.91/621,000.95
  6. Step 6: Final answer
    x = 648,066.23

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Similar ratio
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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.