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Finding the Fourth Proportional to 528,293.40, 791,856.90 and 291,805.80

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Solution

The fourth proportional to 528,293.40, 791,856.90 and 291,805.80 is: 437,386.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,293.40 : 791,856.90 = 291,805.80 : x
  2. Step 2: Convert to fraction form
    528,293.40/791,856.90 = 291,805.80/x
  3. Step 3: Cross multiply
    528,293.40x = 791,856.90 × 291,805.80
  4. Step 4: Simplify right side
    528,293.40x = 231,068,436,190.02
  5. Step 5: Solve for x
    x = 231,068,436,190.02/528,293.40
  6. Step 6: Final answer
    x = 437,386.57

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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.