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Finding the Fourth Proportional to 543,989.34, 810,516.48 and 513,430.88

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Solution

The fourth proportional to 543,989.34, 810,516.48 and 513,430.88 is: 764,985.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,989.34 : 810,516.48 = 513,430.88 : x
  2. Step 2: Convert to fraction form
    543,989.34/810,516.48 = 513,430.88/x
  3. Step 3: Cross multiply
    543,989.34x = 810,516.48 × 513,430.88
  4. Step 4: Simplify right side
    543,989.34x = 416,144,185,528.32
  5. Step 5: Solve for x
    x = 416,144,185,528.32/543,989.34
  6. Step 6: Final answer
    x = 764,985.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.