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Finding the Fourth Proportional to 691,005.13, 953,261.13 and 404,347.75

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Solution

The fourth proportional to 691,005.13, 953,261.13 and 404,347.75 is: 557,809.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,005.13 : 953,261.13 = 404,347.75 : x
  2. Step 2: Convert to fraction form
    691,005.13/953,261.13 = 404,347.75/x
  3. Step 3: Cross multiply
    691,005.13x = 953,261.13 × 404,347.75
  4. Step 4: Simplify right side
    691,005.13x = 385,448,993,077.96
  5. Step 5: Solve for x
    x = 385,448,993,077.96/691,005.13
  6. Step 6: Final answer
    x = 557,809.16

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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.