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Finding the Fourth Proportional to 626,613.60, 939,920.40 and 153,292.80

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Solution

The fourth proportional to 626,613.60, 939,920.40 and 153,292.80 is: 229,939.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,613.60 : 939,920.40 = 153,292.80 : x
  2. Step 2: Convert to fraction form
    626,613.60/939,920.40 = 153,292.80/x
  3. Step 3: Cross multiply
    626,613.60x = 939,920.40 × 153,292.80
  4. Step 4: Simplify right side
    626,613.60x = 144,083,029,893.12
  5. Step 5: Solve for x
    x = 144,083,029,893.12/626,613.60
  6. Step 6: Final answer
    x = 229,939.20

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Double scale
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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.