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Finding the Fourth Proportional to 321,965.40, 482,948.10 and 164,501.40

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Solution

The fourth proportional to 321,965.40, 482,948.10 and 164,501.40 is: 246,752.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,965.40 : 482,948.10 = 164,501.40 : x
  2. Step 2: Convert to fraction form
    321,965.40/482,948.10 = 164,501.40/x
  3. Step 3: Cross multiply
    321,965.40x = 482,948.10 × 164,501.40
  4. Step 4: Simplify right side
    321,965.40x = 79,445,638,577.34
  5. Step 5: Solve for x
    x = 79,445,638,577.34/321,965.40
  6. Step 6: Final answer
    x = 246,752.10

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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.