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Finding the Fourth Proportional to 692,646, 955,842.16 and 386,727.08

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Solution

The fourth proportional to 692,646, 955,842.16 and 386,727.08 is: 533,678.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,646 : 955,842.16 = 386,727.08 : x
  2. Step 2: Convert to fraction form
    692,646/955,842.16 = 386,727.08/x
  3. Step 3: Cross multiply
    692,646x = 955,842.16 × 386,727.08
  4. Step 4: Simplify right side
    692,646x = 369,650,047,477.69
  5. Step 5: Solve for x
    x = 369,650,047,477.69/692,646
  6. Step 6: Final answer
    x = 533,678.17

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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.