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Finding the Fourth Proportional to 328,718.12, 453,658.74 and 185,484.20

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Solution

The fourth proportional to 328,718.12, 453,658.74 and 185,484.20 is: 255,983.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,718.12 : 453,658.74 = 185,484.20 : x
  2. Step 2: Convert to fraction form
    328,718.12/453,658.74 = 185,484.20/x
  3. Step 3: Cross multiply
    328,718.12x = 453,658.74 × 185,484.20
  4. Step 4: Simplify right side
    328,718.12x = 84,146,528,461.91
  5. Step 5: Solve for x
    x = 84,146,528,461.91/328,718.12
  6. Step 6: Final answer
    x = 255,983.85

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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.