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Finding the Fourth Proportional to 191,161.40, 286,347.90 and 112,035.80

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Solution

The fourth proportional to 191,161.40, 286,347.90 and 112,035.80 is: 167,822.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,161.40 : 286,347.90 = 112,035.80 : x
  2. Step 2: Convert to fraction form
    191,161.40/286,347.90 = 112,035.80/x
  3. Step 3: Cross multiply
    191,161.40x = 286,347.90 × 112,035.80
  4. Step 4: Simplify right side
    191,161.40x = 32,081,216,054.82
  5. Step 5: Solve for x
    x = 32,081,216,054.82/191,161.40
  6. Step 6: Final answer
    x = 167,822.67

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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.