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Finding the Fourth Proportional to 191,322.70, 287,113.65 and 124,600.30

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Solution

The fourth proportional to 191,322.70, 287,113.65 and 124,600.30 is: 186,984.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,322.70 : 287,113.65 = 124,600.30 : x
  2. Step 2: Convert to fraction form
    191,322.70/287,113.65 = 124,600.30/x
  3. Step 3: Cross multiply
    191,322.70x = 287,113.65 × 124,600.30
  4. Step 4: Simplify right side
    191,322.70x = 35,774,446,924.10
  5. Step 5: Solve for x
    x = 35,774,446,924.10/191,322.70
  6. Step 6: Final answer
    x = 186,984.85

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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.