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Finding the Fourth Proportional to 615,555.32, 849,444.03 and 386,236.22

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Solution

The fourth proportional to 615,555.32, 849,444.03 and 386,236.22 is: 532,991.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,555.32 : 849,444.03 = 386,236.22 : x
  2. Step 2: Convert to fraction form
    615,555.32/849,444.03 = 386,236.22/x
  3. Step 3: Cross multiply
    615,555.32x = 849,444.03 × 386,236.22
  4. Step 4: Simplify right side
    615,555.32x = 328,086,051,248.77
  5. Step 5: Solve for x
    x = 328,086,051,248.77/615,555.32
  6. Step 6: Final answer
    x = 532,991.98

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Double scale
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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.