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Finding the Fourth Proportional to 191,805.21, 287,507.16 and 65,401.16

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Solution

The fourth proportional to 191,805.21, 287,507.16 and 65,401.16 is: 98,033.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,805.21 : 287,507.16 = 65,401.16 : x
  2. Step 2: Convert to fraction form
    191,805.21/287,507.16 = 65,401.16/x
  3. Step 3: Cross multiply
    191,805.21x = 287,507.16 × 65,401.16
  4. Step 4: Simplify right side
    191,805.21x = 18,803,300,334.77
  5. Step 5: Solve for x
    x = 18,803,300,334.77/191,805.21
  6. Step 6: Final answer
    x = 98,033.31

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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.