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Finding the Fourth Proportional to 260,821.62, 359,965.62 and 153,386.46

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Solution

The fourth proportional to 260,821.62, 359,965.62 and 153,386.46 is: 211,692.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,821.62 : 359,965.62 = 153,386.46 : x
  2. Step 2: Convert to fraction form
    260,821.62/359,965.62 = 153,386.46/x
  3. Step 3: Cross multiply
    260,821.62x = 359,965.62 × 153,386.46
  4. Step 4: Simplify right side
    260,821.62x = 55,213,852,173.51
  5. Step 5: Solve for x
    x = 55,213,852,173.51/260,821.62
  6. Step 6: Final answer
    x = 211,692.01

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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.