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Finding the Fourth Proportional to 386,153,643.60, 579,230,465.40 and 386,153,643.60

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Solution

The fourth proportional to 386,153,643.60, 579,230,465.40 and 386,153,643.60 is: 579,230,465.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,153,643.60 : 579,230,465.40 = 386,153,643.60 : x
  2. Step 2: Convert to fraction form
    386,153,643.60/579,230,465.40 = 386,153,643.60/x
  3. Step 3: Cross multiply
    386,153,643.60x = 579,230,465.40 × 386,153,643.60
  4. Step 4: Simplify right side
    386,153,643.60x = 223,671,954,698,333,728
  5. Step 5: Solve for x
    x = 223,671,954,698,333,728/386,153,643.60
  6. Step 6: Final answer
    x = 579,230,465.40

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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.