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Finding the Fourth Proportional to 653,913.76, 902,416.80 and 367,416.76

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Solution

The fourth proportional to 653,913.76, 902,416.80 and 367,416.76 is: 507,044.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,913.76 : 902,416.80 = 367,416.76 : x
  2. Step 2: Convert to fraction form
    653,913.76/902,416.80 = 367,416.76/x
  3. Step 3: Cross multiply
    653,913.76x = 902,416.80 × 367,416.76
  4. Step 4: Simplify right side
    653,913.76x = 331,563,056,825.57
  5. Step 5: Solve for x
    x = 331,563,056,825.57/653,913.76
  6. Step 6: Final answer
    x = 507,044.01

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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.