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Finding the Fourth Proportional to 693,509.57, 956,772.87 and 435,235.80

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Solution

The fourth proportional to 693,509.57, 956,772.87 and 435,235.80 is: 600,455.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,509.57 : 956,772.87 = 435,235.80 : x
  2. Step 2: Convert to fraction form
    693,509.57/956,772.87 = 435,235.80/x
  3. Step 3: Cross multiply
    693,509.57x = 956,772.87 × 435,235.80
  4. Step 4: Simplify right side
    693,509.57x = 416,421,805,492.75
  5. Step 5: Solve for x
    x = 416,421,805,492.75/693,509.57
  6. Step 6: Final answer
    x = 600,455.74

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Double scale
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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.