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Finding the Fourth Proportional to 157,097.20, 235,645.80 and 121,667.80

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Solution

The fourth proportional to 157,097.20, 235,645.80 and 121,667.80 is: 182,501.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,097.20 : 235,645.80 = 121,667.80 : x
  2. Step 2: Convert to fraction form
    157,097.20/235,645.80 = 121,667.80/x
  3. Step 3: Cross multiply
    157,097.20x = 235,645.80 × 121,667.80
  4. Step 4: Simplify right side
    157,097.20x = 28,670,506,065.24
  5. Step 5: Solve for x
    x = 28,670,506,065.24/157,097.20
  6. Step 6: Final answer
    x = 182,501.70

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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.