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Finding the Fourth Proportional to 540,572,897.88, 745,996,478.62 and 317,563,978.92

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Solution

The fourth proportional to 540,572,897.88, 745,996,478.62 and 317,563,978.92 is: 438,241,744.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,572,897.88 : 745,996,478.62 = 317,563,978.92 : x
  2. Step 2: Convert to fraction form
    540,572,897.88/745,996,478.62 = 317,563,978.92/x
  3. Step 3: Cross multiply
    540,572,897.88x = 745,996,478.62 × 317,563,978.92
  4. Step 4: Simplify right side
    540,572,897.88x = 236,901,610,010,875,936
  5. Step 5: Solve for x
    x = 236,901,610,010,875,936/540,572,897.88
  6. Step 6: Final answer
    x = 438,241,744.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.