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Finding the Fourth Proportional to 836,605,407.40, 1,254,908,111.10 and 744,772,402.60

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Solution

The fourth proportional to 836,605,407.40, 1,254,908,111.10 and 744,772,402.60 is: 1,117,158,603.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,605,407.40 : 1,254,908,111.10 = 744,772,402.60 : x
  2. Step 2: Convert to fraction form
    836,605,407.40/1,254,908,111.10 = 744,772,402.60/x
  3. Step 3: Cross multiply
    836,605,407.40x = 1,254,908,111.10 × 744,772,402.60
  4. Step 4: Simplify right side
    836,605,407.40x = 934,620,928,946,174,720
  5. Step 5: Solve for x
    x = 934,620,928,946,174,720/836,605,407.40
  6. Step 6: Final answer
    x = 1,117,158,603.90

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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.