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Finding the Fourth Proportional to 519,259.60, 778,889.40 and 239,323.60

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Solution

The fourth proportional to 519,259.60, 778,889.40 and 239,323.60 is: 358,985.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,259.60 : 778,889.40 = 239,323.60 : x
  2. Step 2: Convert to fraction form
    519,259.60/778,889.40 = 239,323.60/x
  3. Step 3: Cross multiply
    519,259.60x = 778,889.40 × 239,323.60
  4. Step 4: Simplify right side
    519,259.60x = 186,406,615,209.84
  5. Step 5: Solve for x
    x = 186,406,615,209.84/519,259.60
  6. Step 6: Final answer
    x = 358,985.40

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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.