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Finding the Fourth Proportional to 369,105.40, 553,658.10 and 310,056.40

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Solution

The fourth proportional to 369,105.40, 553,658.10 and 310,056.40 is: 465,084.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,105.40 : 553,658.10 = 310,056.40 : x
  2. Step 2: Convert to fraction form
    369,105.40/553,658.10 = 310,056.40/x
  3. Step 3: Cross multiply
    369,105.40x = 553,658.10 × 310,056.40
  4. Step 4: Simplify right side
    369,105.40x = 171,665,237,316.84
  5. Step 5: Solve for x
    x = 171,665,237,316.84/369,105.40
  6. Step 6: Final answer
    x = 465,084.60

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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.