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Finding the Fourth Proportional to 313,507.18, 432,666.59 and 177,565.31

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Solution

The fourth proportional to 313,507.18, 432,666.59 and 177,565.31 is: 245,055.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,507.18 : 432,666.59 = 177,565.31 : x
  2. Step 2: Convert to fraction form
    313,507.18/432,666.59 = 177,565.31/x
  3. Step 3: Cross multiply
    313,507.18x = 432,666.59 × 177,565.31
  4. Step 4: Simplify right side
    313,507.18x = 76,826,577,179.99
  5. Step 5: Solve for x
    x = 76,826,577,179.99/313,507.18
  6. Step 6: Final answer
    x = 245,055.24

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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.