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Finding the Fourth Proportional to 692,429.16, 955,711.68 and 406,041.54

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Solution

The fourth proportional to 692,429.16, 955,711.68 and 406,041.54 is: 560,430.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,429.16 : 955,711.68 = 406,041.54 : x
  2. Step 2: Convert to fraction form
    692,429.16/955,711.68 = 406,041.54/x
  3. Step 3: Cross multiply
    692,429.16x = 955,711.68 × 406,041.54
  4. Step 4: Simplify right side
    692,429.16x = 388,058,642,343.19
  5. Step 5: Solve for x
    x = 388,058,642,343.19/692,429.16
  6. Step 6: Final answer
    x = 560,430.82

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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.