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Finding the Fourth Proportional to 528,035.40, 791,469.90 and 291,547.80

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Solution

The fourth proportional to 528,035.40, 791,469.90 and 291,547.80 is: 436,999.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,035.40 : 791,469.90 = 291,547.80 : x
  2. Step 2: Convert to fraction form
    528,035.40/791,469.90 = 291,547.80/x
  3. Step 3: Cross multiply
    528,035.40x = 791,469.90 × 291,547.80
  4. Step 4: Simplify right side
    528,035.40x = 230,751,308,111.22
  5. Step 5: Solve for x
    x = 230,751,308,111.22/528,035.40
  6. Step 6: Final answer
    x = 436,999.69

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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.