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Finding the Fourth Proportional to 157,770.40, 236,828.40 and 98,672.80

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Solution

The fourth proportional to 157,770.40, 236,828.40 and 98,672.80 is: 148,117.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,770.40 : 236,828.40 = 98,672.80 : x
  2. Step 2: Convert to fraction form
    157,770.40/236,828.40 = 98,672.80/x
  3. Step 3: Cross multiply
    157,770.40x = 236,828.40 × 98,672.80
  4. Step 4: Simplify right side
    157,770.40x = 23,368,521,347.52
  5. Step 5: Solve for x
    x = 23,368,521,347.52/157,770.40
  6. Step 6: Final answer
    x = 148,117.27

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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.