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Finding the Fourth Proportional to 124,602.40, 186,903.60 and 122,415.40

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Solution

The fourth proportional to 124,602.40, 186,903.60 and 122,415.40 is: 183,623.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,602.40 : 186,903.60 = 122,415.40 : x
  2. Step 2: Convert to fraction form
    124,602.40/186,903.60 = 122,415.40/x
  3. Step 3: Cross multiply
    124,602.40x = 186,903.60 × 122,415.40
  4. Step 4: Simplify right side
    124,602.40x = 22,879,878,955.44
  5. Step 5: Solve for x
    x = 22,879,878,955.44/124,602.40
  6. Step 6: Final answer
    x = 183,623.10

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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.