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Finding the Fourth Proportional to 528,101.40, 792,152.10 and 291,905.40

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Solution

The fourth proportional to 528,101.40, 792,152.10 and 291,905.40 is: 437,858.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,101.40 : 792,152.10 = 291,905.40 : x
  2. Step 2: Convert to fraction form
    528,101.40/792,152.10 = 291,905.40/x
  3. Step 3: Cross multiply
    528,101.40x = 792,152.10 × 291,905.40
  4. Step 4: Simplify right side
    528,101.40x = 231,233,475,611.34
  5. Step 5: Solve for x
    x = 231,233,475,611.34/528,101.40
  6. Step 6: Final answer
    x = 437,858.10

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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.