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Finding the Fourth Proportional to 553,776.54, 764,211.90 and 299,127.72

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Solution

The fourth proportional to 553,776.54, 764,211.90 and 299,127.72 is: 412,796.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,776.54 : 764,211.90 = 299,127.72 : x
  2. Step 2: Convert to fraction form
    553,776.54/764,211.90 = 299,127.72/x
  3. Step 3: Cross multiply
    553,776.54x = 764,211.90 × 299,127.72
  4. Step 4: Simplify right side
    553,776.54x = 228,596,963,243.87
  5. Step 5: Solve for x
    x = 228,596,963,243.87/553,776.54
  6. Step 6: Final answer
    x = 412,796.40

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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.