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Finding the Fourth Proportional to 157,681.48, 236,602.86 and 74,553.16

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Solution

The fourth proportional to 157,681.48, 236,602.86 and 74,553.16 is: 111,867.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,681.48 : 236,602.86 = 74,553.16 : x
  2. Step 2: Convert to fraction form
    157,681.48/236,602.86 = 74,553.16/x
  3. Step 3: Cross multiply
    157,681.48x = 236,602.86 × 74,553.16
  4. Step 4: Simplify right side
    157,681.48x = 17,639,490,878.04
  5. Step 5: Solve for x
    x = 17,639,490,878.04/157,681.48
  6. Step 6: Final answer
    x = 111,867.87

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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.