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Finding the Fourth Proportional to 157,672.40, 236,681.40 and 98,574.80

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Solution

The fourth proportional to 157,672.40, 236,681.40 and 98,574.80 is: 147,970.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,672.40 : 236,681.40 = 98,574.80 : x
  2. Step 2: Convert to fraction form
    157,672.40/236,681.40 = 98,574.80/x
  3. Step 3: Cross multiply
    157,672.40x = 236,681.40 × 98,574.80
  4. Step 4: Simplify right side
    157,672.40x = 23,330,821,668.72
  5. Step 5: Solve for x
    x = 23,330,821,668.72/157,672.40
  6. Step 6: Final answer
    x = 147,970.23

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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.