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Finding the Fourth Proportional to 289,810.93, 434,841.54 and 156,784.90

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Solution

The fourth proportional to 289,810.93, 434,841.54 and 156,784.90 is: 235,245.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,810.93 : 434,841.54 = 156,784.90 : x
  2. Step 2: Convert to fraction form
    289,810.93/434,841.54 = 156,784.90/x
  3. Step 3: Cross multiply
    289,810.93x = 434,841.54 × 156,784.90
  4. Step 4: Simplify right side
    289,810.93x = 68,176,587,364.75
  5. Step 5: Solve for x
    x = 68,176,587,364.75/289,810.93
  6. Step 6: Final answer
    x = 235,245.05

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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.