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Finding the Fourth Proportional to 653,070.20, 978,293.10 and 372,259.40

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Solution

The fourth proportional to 653,070.20, 978,293.10 and 372,259.40 is: 557,641.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,070.20 : 978,293.10 = 372,259.40 : x
  2. Step 2: Convert to fraction form
    653,070.20/978,293.10 = 372,259.40/x
  3. Step 3: Cross multiply
    653,070.20x = 978,293.10 × 372,259.40
  4. Step 4: Simplify right side
    653,070.20x = 364,178,802,430.14
  5. Step 5: Solve for x
    x = 364,178,802,430.14/653,070.20
  6. Step 6: Final answer
    x = 557,641.13

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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.