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Finding the Fourth Proportional to 611,459.82, 843,838.83 and 353,328.21

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Solution

The fourth proportional to 611,459.82, 843,838.83 and 353,328.21 is: 487,606.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,459.82 : 843,838.83 = 353,328.21 : x
  2. Step 2: Convert to fraction form
    611,459.82/843,838.83 = 353,328.21/x
  3. Step 3: Cross multiply
    611,459.82x = 843,838.83 × 353,328.21
  4. Step 4: Simplify right side
    611,459.82x = 298,152,063,332.39
  5. Step 5: Solve for x
    x = 298,152,063,332.39/611,459.82
  6. Step 6: Final answer
    x = 487,606.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.