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Finding the Fourth Proportional to 630,088,703.90, 945,133,055.85 and 545,154,047.90

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Solution

The fourth proportional to 630,088,703.90, 945,133,055.85 and 545,154,047.90 is: 817,731,071.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,088,703.90 : 945,133,055.85 = 545,154,047.90 : x
  2. Step 2: Convert to fraction form
    630,088,703.90/945,133,055.85 = 545,154,047.90/x
  3. Step 3: Cross multiply
    630,088,703.90x = 945,133,055.85 × 545,154,047.90
  4. Step 4: Simplify right side
    630,088,703.90x = 515,243,111,200,724,288
  5. Step 5: Solve for x
    x = 515,243,111,200,724,288/630,088,703.90
  6. Step 6: Final answer
    x = 817,731,071.85

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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.