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Finding the Fourth Proportional to 368,012.19, 552,017.59 and 115,312.02

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Solution

The fourth proportional to 368,012.19, 552,017.59 and 115,312.02 is: 172,967.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,012.19 : 552,017.59 = 115,312.02 : x
  2. Step 2: Convert to fraction form
    368,012.19/552,017.59 = 115,312.02/x
  3. Step 3: Cross multiply
    368,012.19x = 552,017.59 × 115,312.02
  4. Step 4: Simplify right side
    368,012.19x = 63,654,266,100.39
  5. Step 5: Solve for x
    x = 63,654,266,100.39/368,012.19
  6. Step 6: Final answer
    x = 172,967.82

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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.