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Finding the Fourth Proportional to 393,293,564.80, 549,590,624 and 393,293,564.80

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Solution

The fourth proportional to 393,293,564.80, 549,590,624 and 393,293,564.80 is: 549,590,624

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,293,564.80 : 549,590,624 = 393,293,564.80 : x
  2. Step 2: Convert to fraction form
    393,293,564.80/549,590,624 = 393,293,564.80/x
  3. Step 3: Cross multiply
    393,293,564.80x = 549,590,624 × 393,293,564.80
  4. Step 4: Simplify right side
    393,293,564.80x = 216,150,455,693,616,448
  5. Step 5: Solve for x
    x = 216,150,455,693,616,448/393,293,564.80
  6. Step 6: Final answer
    x = 549,590,624

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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.