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Finding the Fourth Proportional to 587,596.80, 881,395.20 and 421,708.80

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Solution

The fourth proportional to 587,596.80, 881,395.20 and 421,708.80 is: 632,563.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,596.80 : 881,395.20 = 421,708.80 : x
  2. Step 2: Convert to fraction form
    587,596.80/881,395.20 = 421,708.80/x
  3. Step 3: Cross multiply
    587,596.80x = 881,395.20 × 421,708.80
  4. Step 4: Simplify right side
    587,596.80x = 371,692,112,117.76
  5. Step 5: Solve for x
    x = 371,692,112,117.76/587,596.80
  6. Step 6: Final answer
    x = 632,563.20

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Similar ratio
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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.