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Finding the Fourth Proportional to 191,459.70, 287,219.93 and 58,309.07

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Solution

The fourth proportional to 191,459.70, 287,219.93 and 58,309.07 is: 87,472.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,459.70 : 287,219.93 = 58,309.07 : x
  2. Step 2: Convert to fraction form
    191,459.70/287,219.93 = 58,309.07/x
  3. Step 3: Cross multiply
    191,459.70x = 287,219.93 × 58,309.07
  4. Step 4: Simplify right side
    191,459.70x = 16,747,525,276.12
  5. Step 5: Solve for x
    x = 16,747,525,276.12/191,459.70
  6. Step 6: Final answer
    x = 87,472.85

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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.