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Finding the Fourth Proportional to 384,354.59, 530,369.10 and 223,178.22

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Solution

The fourth proportional to 384,354.59, 530,369.10 and 223,178.22 is: 307,962.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,354.59 : 530,369.10 = 223,178.22 : x
  2. Step 2: Convert to fraction form
    384,354.59/530,369.10 = 223,178.22/x
  3. Step 3: Cross multiply
    384,354.59x = 530,369.10 × 223,178.22
  4. Step 4: Simplify right side
    384,354.59x = 118,366,831,681.00
  5. Step 5: Solve for x
    x = 118,366,831,681.00/384,354.59
  6. Step 6: Final answer
    x = 307,962.59

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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.