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Finding the Fourth Proportional to 626,616.48, 939,920.40 and 153,308.64

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Solution

The fourth proportional to 626,616.48, 939,920.40 and 153,308.64 is: 229,961.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,616.48 : 939,920.40 = 153,308.64 : x
  2. Step 2: Convert to fraction form
    626,616.48/939,920.40 = 153,308.64/x
  3. Step 3: Cross multiply
    626,616.48x = 939,920.40 × 153,308.64
  4. Step 4: Simplify right side
    626,616.48x = 144,097,918,232.26
  5. Step 5: Solve for x
    x = 144,097,918,232.26/626,616.48
  6. Step 6: Final answer
    x = 229,961.90

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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.