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Finding the Fourth Proportional to 545,655.47, 753,004.22 and 316,346.00

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Solution

The fourth proportional to 545,655.47, 753,004.22 and 316,346.00 is: 436,557.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,655.47 : 753,004.22 = 316,346.00 : x
  2. Step 2: Convert to fraction form
    545,655.47/753,004.22 = 316,346.00/x
  3. Step 3: Cross multiply
    545,655.47x = 753,004.22 × 316,346.00
  4. Step 4: Simplify right side
    545,655.47x = 238,209,867,633.37
  5. Step 5: Solve for x
    x = 238,209,867,633.37/545,655.47
  6. Step 6: Final answer
    x = 436,557.28

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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.