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Finding the Fourth Proportional to 705,315.09, 973,693.31 and 447,455.44

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Solution

The fourth proportional to 705,315.09, 973,693.31 and 447,455.44 is: 617,715.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,315.09 : 973,693.31 = 447,455.44 : x
  2. Step 2: Convert to fraction form
    705,315.09/973,693.31 = 447,455.44/x
  3. Step 3: Cross multiply
    705,315.09x = 973,693.31 × 447,455.44
  4. Step 4: Simplify right side
    705,315.09x = 435,684,367,430.95
  5. Step 5: Solve for x
    x = 435,684,367,430.95/705,315.09
  6. Step 6: Final answer
    x = 617,715.93

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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.