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Finding the Fourth Proportional to 103,628.19, 143,006.18 and 58,916.19

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Solution

The fourth proportional to 103,628.19, 143,006.18 and 58,916.19 is: 81,303.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,628.19 : 143,006.18 = 58,916.19 : x
  2. Step 2: Convert to fraction form
    103,628.19/143,006.18 = 58,916.19/x
  3. Step 3: Cross multiply
    103,628.19x = 143,006.18 × 58,916.19
  4. Step 4: Simplify right side
    103,628.19x = 8,425,379,272.05
  5. Step 5: Solve for x
    x = 8,425,379,272.05/103,628.19
  6. Step 6: Final answer
    x = 81,303.93

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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.