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Finding the Fourth Proportional to 291,785.50, 437,678.25 and 70,169.50

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Solution

The fourth proportional to 291,785.50, 437,678.25 and 70,169.50 is: 105,254.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,785.50 : 437,678.25 = 70,169.50 : x
  2. Step 2: Convert to fraction form
    291,785.50/437,678.25 = 70,169.50/x
  3. Step 3: Cross multiply
    291,785.50x = 437,678.25 × 70,169.50
  4. Step 4: Simplify right side
    291,785.50x = 30,711,663,963.38
  5. Step 5: Solve for x
    x = 30,711,663,963.38/291,785.50
  6. Step 6: Final answer
    x = 105,254.25

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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.