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Finding the Fourth Proportional to 528,039.40, 792,059.10 and 191,079.40

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Solution

The fourth proportional to 528,039.40, 792,059.10 and 191,079.40 is: 286,619.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,039.40 : 792,059.10 = 191,079.40 : x
  2. Step 2: Convert to fraction form
    528,039.40/792,059.10 = 191,079.40/x
  3. Step 3: Cross multiply
    528,039.40x = 792,059.10 × 191,079.40
  4. Step 4: Simplify right side
    528,039.40x = 151,346,177,592.54
  5. Step 5: Solve for x
    x = 151,346,177,592.54/528,039.40
  6. Step 6: Final answer
    x = 286,619.10

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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.