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Finding the Fourth Proportional to 358,823.50, 495,199.11 and 197,678.86

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Solution

The fourth proportional to 358,823.50, 495,199.11 and 197,678.86 is: 272,809.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,823.50 : 495,199.11 = 197,678.86 : x
  2. Step 2: Convert to fraction form
    358,823.50/495,199.11 = 197,678.86/x
  3. Step 3: Cross multiply
    358,823.50x = 495,199.11 × 197,678.86
  4. Step 4: Simplify right side
    358,823.50x = 97,890,395,537.81
  5. Step 5: Solve for x
    x = 97,890,395,537.81/358,823.50
  6. Step 6: Final answer
    x = 272,809.32

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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.