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Finding the Fourth Proportional to 1,062,900,979.20, 1,594,603,411.20 and 545,411,289.60

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Solution

The fourth proportional to 1,062,900,979.20, 1,594,603,411.20 and 545,411,289.60 is: 818,246,214.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,062,900,979.20 : 1,594,603,411.20 = 545,411,289.60 : x
  2. Step 2: Convert to fraction form
    1,062,900,979.20/1,594,603,411.20 = 545,411,289.60/x
  3. Step 3: Cross multiply
    1,062,900,979.20x = 1,594,603,411.20 × 545,411,289.60
  4. Step 4: Simplify right side
    1,062,900,979.20x = 869,714,702,903,151,104
  5. Step 5: Solve for x
    x = 869,714,702,903,151,104/1,062,900,979.20
  6. Step 6: Final answer
    x = 818,246,214.77

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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.