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Finding the Fourth Proportional to 675,490,303.45, 931,696,068.94 and 619,915,188.93

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Solution

The fourth proportional to 675,490,303.45, 931,696,068.94 and 619,915,188.93 is: 855,041,947.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,490,303.45 : 931,696,068.94 = 619,915,188.93 : x
  2. Step 2: Convert to fraction form
    675,490,303.45/931,696,068.94 = 619,915,188.93/x
  3. Step 3: Cross multiply
    675,490,303.45x = 931,696,068.94 × 619,915,188.93
  4. Step 4: Simplify right side
    675,490,303.45x = 577,572,544,602,278,400
  5. Step 5: Solve for x
    x = 577,572,544,602,278,400/675,490,303.45
  6. Step 6: Final answer
    x = 855,041,947.53

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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.