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Finding the Fourth Proportional to 191,172.90, 286,365.51 and 112,096.47

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Solution

The fourth proportional to 191,172.90, 286,365.51 and 112,096.47 is: 167,913.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,172.90 : 286,365.51 = 112,096.47 : x
  2. Step 2: Convert to fraction form
    191,172.90/286,365.51 = 112,096.47/x
  3. Step 3: Cross multiply
    191,172.90x = 286,365.51 × 112,096.47
  4. Step 4: Simplify right side
    191,172.90x = 32,100,562,800.75
  5. Step 5: Solve for x
    x = 32,100,562,800.75/191,172.90
  6. Step 6: Final answer
    x = 167,913.77

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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.