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Finding the Fourth Proportional to 657,343.17, 907,133.58 and 355,537.17

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Solution

The fourth proportional to 657,343.17, 907,133.58 and 355,537.17 is: 490,641.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,343.17 : 907,133.58 = 355,537.17 : x
  2. Step 2: Convert to fraction form
    657,343.17/907,133.58 = 355,537.17/x
  3. Step 3: Cross multiply
    657,343.17x = 907,133.58 × 355,537.17
  4. Step 4: Simplify right side
    657,343.17x = 322,519,705,845.17
  5. Step 5: Solve for x
    x = 322,519,705,845.17/657,343.17
  6. Step 6: Final answer
    x = 490,641.30

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1.5x scale

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.