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Finding the Fourth Proportional to 712,805.88, 1,066,253.94 and 543,041.76

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Solution

The fourth proportional to 712,805.88, 1,066,253.94 and 543,041.76 is: 812,311.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,805.88 : 1,066,253.94 = 543,041.76 : x
  2. Step 2: Convert to fraction form
    712,805.88/1,066,253.94 = 543,041.76/x
  3. Step 3: Cross multiply
    712,805.88x = 1,066,253.94 × 543,041.76
  4. Step 4: Simplify right side
    712,805.88x = 579,020,416,184.53
  5. Step 5: Solve for x
    x = 579,020,416,184.53/712,805.88
  6. Step 6: Final answer
    x = 812,311.50

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.