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Finding the Fourth Proportional to 157,352.94, 235,749.54 and 90,655.25

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Solution

The fourth proportional to 157,352.94, 235,749.54 and 90,655.25 is: 135,821.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,352.94 : 235,749.54 = 90,655.25 : x
  2. Step 2: Convert to fraction form
    157,352.94/235,749.54 = 90,655.25/x
  3. Step 3: Cross multiply
    157,352.94x = 235,749.54 × 90,655.25
  4. Step 4: Simplify right side
    157,352.94x = 21,371,934,037.13
  5. Step 5: Solve for x
    x = 21,371,934,037.13/157,352.94
  6. Step 6: Final answer
    x = 135,821.64

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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.