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Finding the Fourth Proportional to 462,415.40, 693,623.10 and 357,439.40

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Solution

The fourth proportional to 462,415.40, 693,623.10 and 357,439.40 is: 536,159.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,415.40 : 693,623.10 = 357,439.40 : x
  2. Step 2: Convert to fraction form
    462,415.40/693,623.10 = 357,439.40/x
  3. Step 3: Cross multiply
    462,415.40x = 693,623.10 × 357,439.40
  4. Step 4: Simplify right side
    462,415.40x = 247,928,224,690.14
  5. Step 5: Solve for x
    x = 247,928,224,690.14/462,415.40
  6. Step 6: Final answer
    x = 536,159.10

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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.