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Finding the Fourth Proportional to 896,990,648.90, 1,345,485,973.35 and 655,125,944.90

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Solution

The fourth proportional to 896,990,648.90, 1,345,485,973.35 and 655,125,944.90 is: 982,688,917.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    896,990,648.90 : 1,345,485,973.35 = 655,125,944.90 : x
  2. Step 2: Convert to fraction form
    896,990,648.90/1,345,485,973.35 = 655,125,944.90/x
  3. Step 3: Cross multiply
    896,990,648.90x = 1,345,485,973.35 × 655,125,944.90
  4. Step 4: Simplify right side
    896,990,648.90x = 881,462,769,640,614,912
  5. Step 5: Solve for x
    x = 881,462,769,640,614,912/896,990,648.90
  6. Step 6: Final answer
    x = 982,688,917.35

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1.5x scale

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.