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Finding the Fourth Proportional to 621,535.80, 932,303.70 and 521,808.60

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Solution

The fourth proportional to 621,535.80, 932,303.70 and 521,808.60 is: 782,712.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,535.80 : 932,303.70 = 521,808.60 : x
  2. Step 2: Convert to fraction form
    621,535.80/932,303.70 = 521,808.60/x
  3. Step 3: Cross multiply
    621,535.80x = 932,303.70 × 521,808.60
  4. Step 4: Simplify right side
    621,535.80x = 486,484,088,471.82
  5. Step 5: Solve for x
    x = 486,484,088,471.82/621,535.80
  6. Step 6: Final answer
    x = 782,712.90

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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.