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Finding the Fourth Proportional to 369,072.33, 553,411.66 and 191,138.01

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Solution

The fourth proportional to 369,072.33, 553,411.66 and 191,138.01 is: 286,605.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,072.33 : 553,411.66 = 191,138.01 : x
  2. Step 2: Convert to fraction form
    369,072.33/553,411.66 = 191,138.01/x
  3. Step 3: Cross multiply
    369,072.33x = 553,411.66 × 191,138.01
  4. Step 4: Simplify right side
    369,072.33x = 105,778,003,403.20
  5. Step 5: Solve for x
    x = 105,778,003,403.20/369,072.33
  6. Step 6: Final answer
    x = 286,605.08

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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.