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Finding the Fourth Proportional to 634,598.13, 875,740.65 and 348,116.31

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Solution

The fourth proportional to 634,598.13, 875,740.65 and 348,116.31 is: 480,397.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,598.13 : 875,740.65 = 348,116.31 : x
  2. Step 2: Convert to fraction form
    634,598.13/875,740.65 = 348,116.31/x
  3. Step 3: Cross multiply
    634,598.13x = 875,740.65 × 348,116.31
  4. Step 4: Simplify right side
    634,598.13x = 304,859,603,595.00
  5. Step 5: Solve for x
    x = 304,859,603,595.00/634,598.13
  6. Step 6: Final answer
    x = 480,397.89

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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.