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Finding the Fourth Proportional to 65,206.48, 89,985.04 and 35,398.48

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Solution

The fourth proportional to 65,206.48, 89,985.04 and 35,398.48 is: 48,849.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,206.48 : 89,985.04 = 35,398.48 : x
  2. Step 2: Convert to fraction form
    65,206.48/89,985.04 = 35,398.48/x
  3. Step 3: Cross multiply
    65,206.48x = 89,985.04 × 35,398.48
  4. Step 4: Simplify right side
    65,206.48x = 3,185,333,638.74
  5. Step 5: Solve for x
    x = 3,185,333,638.74/65,206.48
  6. Step 6: Final answer
    x = 48,849.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.