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Finding the Fourth Proportional to 356,970.72, 535,506.20 and 104,269.76

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Solution

The fourth proportional to 356,970.72, 535,506.20 and 104,269.76 is: 156,419.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,970.72 : 535,506.20 = 104,269.76 : x
  2. Step 2: Convert to fraction form
    356,970.72/535,506.20 = 104,269.76/x
  3. Step 3: Cross multiply
    356,970.72x = 535,506.20 × 104,269.76
  4. Step 4: Simplify right side
    356,970.72x = 55,837,102,952.51
  5. Step 5: Solve for x
    x = 55,837,102,952.51/356,970.72
  6. Step 6: Final answer
    x = 156,419.28

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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.