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Finding the Fourth Proportional to 424,864.76, 637,393.16 and 140,554.64

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Solution

The fourth proportional to 424,864.76, 637,393.16 and 140,554.64 is: 210,863.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,864.76 : 637,393.16 = 140,554.64 : x
  2. Step 2: Convert to fraction form
    424,864.76/637,393.16 = 140,554.64/x
  3. Step 3: Cross multiply
    424,864.76x = 637,393.16 × 140,554.64
  4. Step 4: Simplify right side
    424,864.76x = 89,588,565,925.43
  5. Step 5: Solve for x
    x = 89,588,565,925.43/424,864.76
  6. Step 6: Final answer
    x = 210,863.72

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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.