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Finding the Fourth Proportional to 626,779.60, 939,780.60 and 360,408.40

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Solution

The fourth proportional to 626,779.60, 939,780.60 and 360,408.40 is: 540,389.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,779.60 : 939,780.60 = 360,408.40 : x
  2. Step 2: Convert to fraction form
    626,779.60/939,780.60 = 360,408.40/x
  3. Step 3: Cross multiply
    626,779.60x = 939,780.60 × 360,408.40
  4. Step 4: Simplify right side
    626,779.60x = 338,704,822,397.04
  5. Step 5: Solve for x
    x = 338,704,822,397.04/626,779.60
  6. Step 6: Final answer
    x = 540,389.03

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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.