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Finding the Fourth Proportional to 519,223.60, 778,835.40 and 239,287.60

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Solution

The fourth proportional to 519,223.60, 778,835.40 and 239,287.60 is: 358,931.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,223.60 : 778,835.40 = 239,287.60 : x
  2. Step 2: Convert to fraction form
    519,223.60/778,835.40 = 239,287.60/x
  3. Step 3: Cross multiply
    519,223.60x = 778,835.40 × 239,287.60
  4. Step 4: Simplify right side
    519,223.60x = 186,365,653,661.04
  5. Step 5: Solve for x
    x = 186,365,653,661.04/519,223.60
  6. Step 6: Final answer
    x = 358,931.40

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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.