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Finding the Fourth Proportional to 153,247.69, 230,010.59 and 78,419.53

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Solution

The fourth proportional to 153,247.69, 230,010.59 and 78,419.53 is: 117,700.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,247.69 : 230,010.59 = 78,419.53 : x
  2. Step 2: Convert to fraction form
    153,247.69/230,010.59 = 78,419.53/x
  3. Step 3: Cross multiply
    153,247.69x = 230,010.59 × 78,419.53
  4. Step 4: Simplify right side
    153,247.69x = 18,037,322,362.82
  5. Step 5: Solve for x
    x = 18,037,322,362.82/153,247.69
  6. Step 6: Final answer
    x = 117,700.45

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1.5x scale

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.