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Finding the Fourth Proportional to 710,994.80, 1,066,492.20 and 641,010.80

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Solution

The fourth proportional to 710,994.80, 1,066,492.20 and 641,010.80 is: 961,516.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,994.80 : 1,066,492.20 = 641,010.80 : x
  2. Step 2: Convert to fraction form
    710,994.80/1,066,492.20 = 641,010.80/x
  3. Step 3: Cross multiply
    710,994.80x = 1,066,492.20 × 641,010.80
  4. Step 4: Simplify right side
    710,994.80x = 683,633,018,315.76
  5. Step 5: Solve for x
    x = 683,633,018,315.76/710,994.80
  6. Step 6: Final answer
    x = 961,516.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.