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Finding the Fourth Proportional to 705,782.60, 973,985.94 and 383,492.72

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Solution

The fourth proportional to 705,782.60, 973,985.94 and 383,492.72 is: 529,223.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,782.60 : 973,985.94 = 383,492.72 : x
  2. Step 2: Convert to fraction form
    705,782.60/973,985.94 = 383,492.72/x
  3. Step 3: Cross multiply
    705,782.60x = 973,985.94 × 383,492.72
  4. Step 4: Simplify right side
    705,782.60x = 373,516,510,584.96
  5. Step 5: Solve for x
    x = 373,516,510,584.96/705,782.60
  6. Step 6: Final answer
    x = 529,223.18

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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.