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Finding the Fourth Proportional to 644,062.58, 964,598.96 and 621,643.10

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Solution

The fourth proportional to 644,062.58, 964,598.96 and 621,643.10 is: 931,021.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,062.58 : 964,598.96 = 621,643.10 : x
  2. Step 2: Convert to fraction form
    644,062.58/964,598.96 = 621,643.10/x
  3. Step 3: Cross multiply
    644,062.58x = 964,598.96 × 621,643.10
  4. Step 4: Simplify right side
    644,062.58x = 599,636,279,819.97
  5. Step 5: Solve for x
    x = 599,636,279,819.97/644,062.58
  6. Step 6: Final answer
    x = 931,021.77

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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.