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Finding the Fourth Proportional to 621,866.40, 931,244.40 and 497,450.40

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Solution

The fourth proportional to 621,866.40, 931,244.40 and 497,450.40 is: 744,931.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,866.40 : 931,244.40 = 497,450.40 : x
  2. Step 2: Convert to fraction form
    621,866.40/931,244.40 = 497,450.40/x
  3. Step 3: Cross multiply
    621,866.40x = 931,244.40 × 497,450.40
  4. Step 4: Simplify right side
    621,866.40x = 463,247,899,277.76
  5. Step 5: Solve for x
    x = 463,247,899,277.76/621,866.40
  6. Step 6: Final answer
    x = 744,931.55

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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.