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Finding the Fourth Proportional to 475,136.55, 655,688.57 and 260,284.32

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Solution

The fourth proportional to 475,136.55, 655,688.57 and 260,284.32 is: 359,192.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,136.55 : 655,688.57 = 260,284.32 : x
  2. Step 2: Convert to fraction form
    475,136.55/655,688.57 = 260,284.32/x
  3. Step 3: Cross multiply
    475,136.55x = 655,688.57 × 260,284.32
  4. Step 4: Simplify right side
    475,136.55x = 170,665,452,272.80
  5. Step 5: Solve for x
    x = 170,665,452,272.80/475,136.55
  6. Step 6: Final answer
    x = 359,192.43

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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.