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Finding the Fourth Proportional to 635,688,032.40, 892,003,978.80 and 635,688,032.40

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Solution

The fourth proportional to 635,688,032.40, 892,003,978.80 and 635,688,032.40 is: 892,003,978.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,688,032.40 : 892,003,978.80 = 635,688,032.40 : x
  2. Step 2: Convert to fraction form
    635,688,032.40/892,003,978.80 = 635,688,032.40/x
  3. Step 3: Cross multiply
    635,688,032.40x = 892,003,978.80 × 635,688,032.40
  4. Step 4: Simplify right side
    635,688,032.40x = 567,036,254,176,343,232
  5. Step 5: Solve for x
    x = 567,036,254,176,343,232/635,688,032.40
  6. Step 6: Final answer
    x = 892,003,978.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.