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Finding the Fourth Proportional to 567,681.12, 783,395.28 and 313,023.60

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Solution

The fourth proportional to 567,681.12, 783,395.28 and 313,023.60 is: 431,970.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,681.12 : 783,395.28 = 313,023.60 : x
  2. Step 2: Convert to fraction form
    567,681.12/783,395.28 = 313,023.60/x
  3. Step 3: Cross multiply
    567,681.12x = 783,395.28 × 313,023.60
  4. Step 4: Simplify right side
    567,681.12x = 245,221,210,768.61
  5. Step 5: Solve for x
    x = 245,221,210,768.61/567,681.12
  6. Step 6: Final answer
    x = 431,970.00

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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.