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Finding the Fourth Proportional to 520,332.83, 780,144.09 and 277,210.25

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Solution

The fourth proportional to 520,332.83, 780,144.09 and 277,210.25 is: 415,626.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,332.83 : 780,144.09 = 277,210.25 : x
  2. Step 2: Convert to fraction form
    520,332.83/780,144.09 = 277,210.25/x
  3. Step 3: Cross multiply
    520,332.83x = 780,144.09 × 277,210.25
  4. Step 4: Simplify right side
    520,332.83x = 216,263,934,324.20
  5. Step 5: Solve for x
    x = 216,263,934,324.20/520,332.83
  6. Step 6: Final answer
    x = 415,626.16

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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.