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Finding the Fourth Proportional to 191,803.40, 287,462.10 and 73,316.60

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Solution

The fourth proportional to 191,803.40, 287,462.10 and 73,316.60 is: 109,882.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,803.40 : 287,462.10 = 73,316.60 : x
  2. Step 2: Convert to fraction form
    191,803.40/287,462.10 = 73,316.60/x
  3. Step 3: Cross multiply
    191,803.40x = 287,462.10 × 73,316.60
  4. Step 4: Simplify right side
    191,803.40x = 21,075,743,800.86
  5. Step 5: Solve for x
    x = 21,075,743,800.86/191,803.40
  6. Step 6: Final answer
    x = 109,882.01

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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.