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Finding the Fourth Proportional to 123,259.60, 184,889.40 and 118,421.20

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Solution

The fourth proportional to 123,259.60, 184,889.40 and 118,421.20 is: 177,631.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,259.60 : 184,889.40 = 118,421.20 : x
  2. Step 2: Convert to fraction form
    123,259.60/184,889.40 = 118,421.20/x
  3. Step 3: Cross multiply
    123,259.60x = 184,889.40 × 118,421.20
  4. Step 4: Simplify right side
    123,259.60x = 21,894,824,615.28
  5. Step 5: Solve for x
    x = 21,894,824,615.28/123,259.60
  6. Step 6: Final answer
    x = 177,631.80

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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.