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Finding the Fourth Proportional to 353,164.70, 530,038.65 and 163,916.30

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Solution

The fourth proportional to 353,164.70, 530,038.65 and 163,916.30 is: 246,009.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,164.70 : 530,038.65 = 163,916.30 : x
  2. Step 2: Convert to fraction form
    353,164.70/530,038.65 = 163,916.30/x
  3. Step 3: Cross multiply
    353,164.70x = 530,038.65 × 163,916.30
  4. Step 4: Simplify right side
    353,164.70x = 86,881,974,365.00
  5. Step 5: Solve for x
    x = 86,881,974,365.00/353,164.70
  6. Step 6: Final answer
    x = 246,009.79

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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.