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Finding the Fourth Proportional to 519,885.60, 779,828.40 and 239,949.60

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Solution

The fourth proportional to 519,885.60, 779,828.40 and 239,949.60 is: 359,924.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,885.60 : 779,828.40 = 239,949.60 : x
  2. Step 2: Convert to fraction form
    519,885.60/779,828.40 = 239,949.60/x
  3. Step 3: Cross multiply
    519,885.60x = 779,828.40 × 239,949.60
  4. Step 4: Simplify right side
    519,885.60x = 187,119,512,648.64
  5. Step 5: Solve for x
    x = 187,119,512,648.64/519,885.60
  6. Step 6: Final answer
    x = 359,924.40

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Half scale
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Double scale
Find fourth proportional to 519,886.60, 779,829.90 and 239,950.60
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.