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Finding the Fourth Proportional to 476,088.80, 656,980.56 and 261,223.52

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Solution

The fourth proportional to 476,088.80, 656,980.56 and 261,223.52 is: 360,476.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,088.80 : 656,980.56 = 261,223.52 : x
  2. Step 2: Convert to fraction form
    476,088.80/656,980.56 = 261,223.52/x
  3. Step 3: Cross multiply
    476,088.80x = 656,980.56 × 261,223.52
  4. Step 4: Simplify right side
    476,088.80x = 171,618,774,454.77
  5. Step 5: Solve for x
    x = 171,618,774,454.77/476,088.80
  6. Step 6: Final answer
    x = 360,476.40

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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.