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Finding the Fourth Proportional to 356,712.89, 535,063.14 and 120,055.58

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Solution

The fourth proportional to 356,712.89, 535,063.14 and 120,055.58 is: 180,081.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,712.89 : 535,063.14 = 120,055.58 : x
  2. Step 2: Convert to fraction form
    356,712.89/535,063.14 = 120,055.58/x
  3. Step 3: Cross multiply
    356,712.89x = 535,063.14 × 120,055.58
  4. Step 4: Simplify right side
    356,712.89x = 64,237,312,934.01
  5. Step 5: Solve for x
    x = 64,237,312,934.01/356,712.89
  6. Step 6: Final answer
    x = 180,081.28

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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.