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Finding the Fourth Proportional to 528,095.40, 792,143.10 and 243,785.40

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Solution

The fourth proportional to 528,095.40, 792,143.10 and 243,785.40 is: 365,678.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,095.40 : 792,143.10 = 243,785.40 : x
  2. Step 2: Convert to fraction form
    528,095.40/792,143.10 = 243,785.40/x
  3. Step 3: Cross multiply
    528,095.40x = 792,143.10 × 243,785.40
  4. Step 4: Simplify right side
    528,095.40x = 193,112,922,490.74
  5. Step 5: Solve for x
    x = 193,112,922,490.74/528,095.40
  6. Step 6: Final answer
    x = 365,678.10

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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.