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Finding the Fourth Proportional to 528,157.92, 728,837.76 and 286,436.16

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Solution

The fourth proportional to 528,157.92, 728,837.76 and 286,436.16 is: 395,270.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,157.92 : 728,837.76 = 286,436.16 : x
  2. Step 2: Convert to fraction form
    528,157.92/728,837.76 = 286,436.16/x
  3. Step 3: Cross multiply
    528,157.92x = 728,837.76 × 286,436.16
  4. Step 4: Simplify right side
    528,157.92x = 208,765,489,237.40
  5. Step 5: Solve for x
    x = 208,765,489,237.40/528,157.92
  6. Step 6: Final answer
    x = 395,270.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.