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Finding the Fourth Proportional to 528,086.65, 792,129.98 and 243,776.65

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Solution

The fourth proportional to 528,086.65, 792,129.98 and 243,776.65 is: 365,664.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,086.65 : 792,129.98 = 243,776.65 : x
  2. Step 2: Convert to fraction form
    528,086.65/792,129.98 = 243,776.65/x
  3. Step 3: Cross multiply
    528,086.65x = 792,129.98 × 243,776.65
  4. Step 4: Simplify right side
    528,086.65x = 193,102,792,888.97
  5. Step 5: Solve for x
    x = 193,102,792,888.97/528,086.65
  6. Step 6: Final answer
    x = 365,664.98

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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.