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Finding the Fourth Proportional to 556,623.92, 768,140.88 and 314,901.56

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Solution

The fourth proportional to 556,623.92, 768,140.88 and 314,901.56 is: 434,564.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,623.92 : 768,140.88 = 314,901.56 : x
  2. Step 2: Convert to fraction form
    556,623.92/768,140.88 = 314,901.56/x
  3. Step 3: Cross multiply
    556,623.92x = 768,140.88 × 314,901.56
  4. Step 4: Simplify right side
    556,623.92x = 241,888,761,411.77
  5. Step 5: Solve for x
    x = 241,888,761,411.77/556,623.92
  6. Step 6: Final answer
    x = 434,564.08

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1.5x scale

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.