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Finding the Fourth Proportional to 151,873.79, 209,543.76 and 87,339.52

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Solution

The fourth proportional to 151,873.79, 209,543.76 and 87,339.52 is: 120,504.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,873.79 : 209,543.76 = 87,339.52 : x
  2. Step 2: Convert to fraction form
    151,873.79/209,543.76 = 87,339.52/x
  3. Step 3: Cross multiply
    151,873.79x = 209,543.76 × 87,339.52
  4. Step 4: Simplify right side
    151,873.79x = 18,301,450,500.64
  5. Step 5: Solve for x
    x = 18,301,450,500.64/151,873.79
  6. Step 6: Final answer
    x = 120,504.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.