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Finding the Fourth Proportional to 615,554.32, 849,442.65 and 386,235.22

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Solution

The fourth proportional to 615,554.32, 849,442.65 and 386,235.22 is: 532,990.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,554.32 : 849,442.65 = 386,235.22 : x
  2. Step 2: Convert to fraction form
    615,554.32/849,442.65 = 386,235.22/x
  3. Step 3: Cross multiply
    615,554.32x = 849,442.65 × 386,235.22
  4. Step 4: Simplify right side
    615,554.32x = 328,084,668,800.13
  5. Step 5: Solve for x
    x = 328,084,668,800.13/615,554.32
  6. Step 6: Final answer
    x = 532,990.60

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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.