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Finding the Fourth Proportional to 669,685.76, 924,408.96 and 443,404.16

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Solution

The fourth proportional to 669,685.76, 924,408.96 and 443,404.16 is: 612,058.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,685.76 : 924,408.96 = 443,404.16 : x
  2. Step 2: Convert to fraction form
    669,685.76/924,408.96 = 443,404.16/x
  3. Step 3: Cross multiply
    669,685.76x = 924,408.96 × 443,404.16
  4. Step 4: Simplify right side
    669,685.76x = 409,886,778,405.27
  5. Step 5: Solve for x
    x = 409,886,778,405.27/669,685.76
  6. Step 6: Final answer
    x = 612,058.38

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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.