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Finding the Fourth Proportional to 124,290.40, 186,459.90 and 49,397.80

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Solution

The fourth proportional to 124,290.40, 186,459.90 and 49,397.80 is: 74,106.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,290.40 : 186,459.90 = 49,397.80 : x
  2. Step 2: Convert to fraction form
    124,290.40/186,459.90 = 49,397.80/x
  3. Step 3: Cross multiply
    124,290.40x = 186,459.90 × 49,397.80
  4. Step 4: Simplify right side
    124,290.40x = 9,210,708,848.22
  5. Step 5: Solve for x
    x = 9,210,708,848.22/124,290.40
  6. Step 6: Final answer
    x = 74,106.36

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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.