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Finding the Fourth Proportional to 328,957.50, 453,987.73 and 261,530.92

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Solution

The fourth proportional to 328,957.50, 453,987.73 and 261,530.92 is: 360,933.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,957.50 : 453,987.73 = 261,530.92 : x
  2. Step 2: Convert to fraction form
    328,957.50/453,987.73 = 261,530.92/x
  3. Step 3: Cross multiply
    328,957.50x = 453,987.73 × 261,530.92
  4. Step 4: Simplify right side
    328,957.50x = 118,731,828,695.61
  5. Step 5: Solve for x
    x = 118,731,828,695.61/328,957.50
  6. Step 6: Final answer
    x = 360,933.64

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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.