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Finding the Fourth Proportional to 709,206.59, 978,700.45 and 403,283.02

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Solution

The fourth proportional to 709,206.59, 978,700.45 and 403,283.02 is: 556,527.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,206.59 : 978,700.45 = 403,283.02 : x
  2. Step 2: Convert to fraction form
    709,206.59/978,700.45 = 403,283.02/x
  3. Step 3: Cross multiply
    709,206.59x = 978,700.45 × 403,283.02
  4. Step 4: Simplify right side
    709,206.59x = 394,693,273,151.36
  5. Step 5: Solve for x
    x = 394,693,273,151.36/709,206.59
  6. Step 6: Final answer
    x = 556,527.93

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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.