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Finding the Fourth Proportional to 352,287,127.80, 528,430,691.70 and 352,287,127.80

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Solution

The fourth proportional to 352,287,127.80, 528,430,691.70 and 352,287,127.80 is: 528,430,691.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,287,127.80 : 528,430,691.70 = 352,287,127.80 : x
  2. Step 2: Convert to fraction form
    352,287,127.80/528,430,691.70 = 352,287,127.80/x
  3. Step 3: Cross multiply
    352,287,127.80x = 528,430,691.70 × 352,287,127.80
  4. Step 4: Simplify right side
    352,287,127.80x = 186,159,330,620,360,288
  5. Step 5: Solve for x
    x = 186,159,330,620,360,288/352,287,127.80
  6. Step 6: Final answer
    x = 528,430,691.70

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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.