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Finding the Fourth Proportional to 450,280.01, 621,325.55 and 256,712.69

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Solution

The fourth proportional to 450,280.01, 621,325.55 and 256,712.69 is: 354,228.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,280.01 : 621,325.55 = 256,712.69 : x
  2. Step 2: Convert to fraction form
    450,280.01/621,325.55 = 256,712.69/x
  3. Step 3: Cross multiply
    450,280.01x = 621,325.55 × 256,712.69
  4. Step 4: Simplify right side
    450,280.01x = 159,502,152,022.67
  5. Step 5: Solve for x
    x = 159,502,152,022.67/450,280.01
  6. Step 6: Final answer
    x = 354,228.81

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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.