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Finding the Fourth Proportional to 612,030.51, 918,175.37 and 191,338.11

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Solution

The fourth proportional to 612,030.51, 918,175.37 and 191,338.11 is: 287,047.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,030.51 : 918,175.37 = 191,338.11 : x
  2. Step 2: Convert to fraction form
    612,030.51/918,175.37 = 191,338.11/x
  3. Step 3: Cross multiply
    612,030.51x = 918,175.37 × 191,338.11
  4. Step 4: Simplify right side
    612,030.51x = 175,681,938,987.66
  5. Step 5: Solve for x
    x = 175,681,938,987.66/612,030.51
  6. Step 6: Final answer
    x = 287,047.68

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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.