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Finding the Fourth Proportional to 384,343.18, 530,353.12 and 223,166.68

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Solution

The fourth proportional to 384,343.18, 530,353.12 and 223,166.68 is: 307,946.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,343.18 : 530,353.12 = 223,166.68 : x
  2. Step 2: Convert to fraction form
    384,343.18/530,353.12 = 223,166.68/x
  3. Step 3: Cross multiply
    384,343.18x = 530,353.12 × 223,166.68
  4. Step 4: Simplify right side
    384,343.18x = 118,357,145,018.04
  5. Step 5: Solve for x
    x = 118,357,145,018.04/384,343.18
  6. Step 6: Final answer
    x = 307,946.52

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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.