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Finding the Fourth Proportional to 653,070.20, 978,395.70 and 371,751.80

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Solution

The fourth proportional to 653,070.20, 978,395.70 and 371,751.80 is: 556,939.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,070.20 : 978,395.70 = 371,751.80 : x
  2. Step 2: Convert to fraction form
    653,070.20/978,395.70 = 371,751.80/x
  3. Step 3: Cross multiply
    653,070.20x = 978,395.70 × 371,751.80
  4. Step 4: Simplify right side
    653,070.20x = 363,720,362,587.26
  5. Step 5: Solve for x
    x = 363,720,362,587.26/653,070.20
  6. Step 6: Final answer
    x = 556,939.15

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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.