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Finding the Fourth Proportional to 451,475.84, 623,056.88 and 257,900.40

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Solution

The fourth proportional to 451,475.84, 623,056.88 and 257,900.40 is: 355,914.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,475.84 : 623,056.88 = 257,900.40 : x
  2. Step 2: Convert to fraction form
    451,475.84/623,056.88 = 257,900.40/x
  3. Step 3: Cross multiply
    451,475.84x = 623,056.88 × 257,900.40
  4. Step 4: Simplify right side
    451,475.84x = 160,686,618,574.75
  5. Step 5: Solve for x
    x = 160,686,618,574.75/451,475.84
  6. Step 6: Final answer
    x = 355,914.10

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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.