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Finding the Fourth Proportional to 712,670.65, 983,112.62 and 440,651.59

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Solution

The fourth proportional to 712,670.65, 983,112.62 and 440,651.59 is: 607,868.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,670.65 : 983,112.62 = 440,651.59 : x
  2. Step 2: Convert to fraction form
    712,670.65/983,112.62 = 440,651.59/x
  3. Step 3: Cross multiply
    712,670.65x = 983,112.62 × 440,651.59
  4. Step 4: Simplify right side
    712,670.65x = 433,210,134,491.03
  5. Step 5: Solve for x
    x = 433,210,134,491.03/712,670.65
  6. Step 6: Final answer
    x = 607,868.64

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Double scale
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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.