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Finding the Fourth Proportional to 124,312.78, 186,631.78 and 73,804.02

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Solution

The fourth proportional to 124,312.78, 186,631.78 and 73,804.02 is: 110,802.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,312.78 : 186,631.78 = 73,804.02 : x
  2. Step 2: Convert to fraction form
    124,312.78/186,631.78 = 73,804.02/x
  3. Step 3: Cross multiply
    124,312.78x = 186,631.78 × 73,804.02
  4. Step 4: Simplify right side
    124,312.78x = 13,774,175,623.76
  5. Step 5: Solve for x
    x = 13,774,175,623.76/124,312.78
  6. Step 6: Final answer
    x = 110,802.57

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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.