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Finding the Fourth Proportional to 124,300.70, 186,341.70 and 74,400.65

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Solution

The fourth proportional to 124,300.70, 186,341.70 and 74,400.65 is: 111,535.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,300.70 : 186,341.70 = 74,400.65 : x
  2. Step 2: Convert to fraction form
    124,300.70/186,341.70 = 74,400.65/x
  3. Step 3: Cross multiply
    124,300.70x = 186,341.70 × 74,400.65
  4. Step 4: Simplify right side
    124,300.70x = 13,863,943,602.11
  5. Step 5: Solve for x
    x = 13,863,943,602.11/124,300.70
  6. Step 6: Final answer
    x = 111,535.52

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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.