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Finding the Fourth Proportional to 561,715.19, 775,172.12 and 319,994.18

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Solution

The fourth proportional to 561,715.19, 775,172.12 and 319,994.18 is: 441,594.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,715.19 : 775,172.12 = 319,994.18 : x
  2. Step 2: Convert to fraction form
    561,715.19/775,172.12 = 319,994.18/x
  3. Step 3: Cross multiply
    561,715.19x = 775,172.12 × 319,994.18
  4. Step 4: Simplify right side
    561,715.19x = 248,050,566,898.26
  5. Step 5: Solve for x
    x = 248,050,566,898.26/561,715.19
  6. Step 6: Final answer
    x = 441,594.91

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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.