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Finding the Fourth Proportional to 620,646.57, 856,492.99 and 348,714.30

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Solution

The fourth proportional to 620,646.57, 856,492.99 and 348,714.30 is: 481,226.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,646.57 : 856,492.99 = 348,714.30 : x
  2. Step 2: Convert to fraction form
    620,646.57/856,492.99 = 348,714.30/x
  3. Step 3: Cross multiply
    620,646.57x = 856,492.99 × 348,714.30
  4. Step 4: Simplify right side
    620,646.57x = 298,671,354,598.38
  5. Step 5: Solve for x
    x = 298,671,354,598.38/620,646.57
  6. Step 6: Final answer
    x = 481,226.15

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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.