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Finding the Fourth Proportional to 611,559.60, 917,339.40 and 190,780.80

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Solution

The fourth proportional to 611,559.60, 917,339.40 and 190,780.80 is: 286,171.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,559.60 : 917,339.40 = 190,780.80 : x
  2. Step 2: Convert to fraction form
    611,559.60/917,339.40 = 190,780.80/x
  3. Step 3: Cross multiply
    611,559.60x = 917,339.40 × 190,780.80
  4. Step 4: Simplify right side
    611,559.60x = 175,010,744,603.52
  5. Step 5: Solve for x
    x = 175,010,744,603.52/611,559.60
  6. Step 6: Final answer
    x = 286,171.20

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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.