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Finding the Fourth Proportional to 705,187.58, 973,131.56 and 382,890.30

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Solution

The fourth proportional to 705,187.58, 973,131.56 and 382,890.30 is: 528,373.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,187.58 : 973,131.56 = 382,890.30 : x
  2. Step 2: Convert to fraction form
    705,187.58/973,131.56 = 382,890.30/x
  3. Step 3: Cross multiply
    705,187.58x = 973,131.56 × 382,890.30
  4. Step 4: Simplify right side
    705,187.58x = 372,602,634,947.87
  5. Step 5: Solve for x
    x = 372,602,634,947.87/705,187.58
  6. Step 6: Final answer
    x = 528,373.79

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Double scale
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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.