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Finding the Fourth Proportional to 623,409.60, 935,114.40 and 202,699.20

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Solution

The fourth proportional to 623,409.60, 935,114.40 and 202,699.20 is: 304,048.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,409.60 : 935,114.40 = 202,699.20 : x
  2. Step 2: Convert to fraction form
    623,409.60/935,114.40 = 202,699.20/x
  3. Step 3: Cross multiply
    623,409.60x = 935,114.40 × 202,699.20
  4. Step 4: Simplify right side
    623,409.60x = 189,546,940,788.48
  5. Step 5: Solve for x
    x = 189,546,940,788.48/623,409.60
  6. Step 6: Final answer
    x = 304,048.80

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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.