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Finding the Fourth Proportional to 124,578.76, 186,897.90 and 40,339.01

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Solution

The fourth proportional to 124,578.76, 186,897.90 and 40,339.01 is: 60,518.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,578.76 : 186,897.90 = 40,339.01 : x
  2. Step 2: Convert to fraction form
    124,578.76/186,897.90 = 40,339.01/x
  3. Step 3: Cross multiply
    124,578.76x = 186,897.90 × 40,339.01
  4. Step 4: Simplify right side
    124,578.76x = 7,539,276,257.08
  5. Step 5: Solve for x
    x = 7,539,276,257.08/124,578.76
  6. Step 6: Final answer
    x = 60,518.15

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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.