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Finding the Fourth Proportional to 393,812.96, 543,300.08 and 292,088.70

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Solution

The fourth proportional to 393,812.96, 543,300.08 and 292,088.70 is: 402,962.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,812.96 : 543,300.08 = 292,088.70 : x
  2. Step 2: Convert to fraction form
    393,812.96/543,300.08 = 292,088.70/x
  3. Step 3: Cross multiply
    393,812.96x = 543,300.08 × 292,088.70
  4. Step 4: Simplify right side
    393,812.96x = 158,691,812,616.65
  5. Step 5: Solve for x
    x = 158,691,812,616.65/393,812.96
  6. Step 6: Final answer
    x = 402,962.40

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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.