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Finding the Fourth Proportional to 604,006,556.40, 906,009,834.60 and 386,328,322.80

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Solution

The fourth proportional to 604,006,556.40, 906,009,834.60 and 386,328,322.80 is: 579,492,484.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,006,556.40 : 906,009,834.60 = 386,328,322.80 : x
  2. Step 2: Convert to fraction form
    604,006,556.40/906,009,834.60 = 386,328,322.80/x
  3. Step 3: Cross multiply
    604,006,556.40x = 906,009,834.60 × 386,328,322.80
  4. Step 4: Simplify right side
    604,006,556.40x = 350,017,259,841,323,456
  5. Step 5: Solve for x
    x = 350,017,259,841,323,456/604,006,556.40
  6. Step 6: Final answer
    x = 579,492,484.20

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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.