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Finding the Fourth Proportional to 526,007.80, 788,622.90 and 289,617.40

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Solution

The fourth proportional to 526,007.80, 788,622.90 and 289,617.40 is: 434,212.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,007.80 : 788,622.90 = 289,617.40 : x
  2. Step 2: Convert to fraction form
    526,007.80/788,622.90 = 289,617.40/x
  3. Step 3: Cross multiply
    526,007.80x = 788,622.90 × 289,617.40
  4. Step 4: Simplify right side
    526,007.80x = 228,398,913,878.46
  5. Step 5: Solve for x
    x = 228,398,913,878.46/526,007.80
  6. Step 6: Final answer
    x = 434,212.03

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1.5x scale

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.