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Finding the Fourth Proportional to 124,842.60, 186,875.10 and 120,954.60

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Solution

The fourth proportional to 124,842.60, 186,875.10 and 120,954.60 is: 181,055.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,842.60 : 186,875.10 = 120,954.60 : x
  2. Step 2: Convert to fraction form
    124,842.60/186,875.10 = 120,954.60/x
  3. Step 3: Cross multiply
    124,842.60x = 186,875.10 × 120,954.60
  4. Step 4: Simplify right side
    124,842.60x = 22,603,402,970.46
  5. Step 5: Solve for x
    x = 22,603,402,970.46/124,842.60
  6. Step 6: Final answer
    x = 181,055.21

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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.